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Six amazing Israeli inventions discovered by accident

JERUSALEM – When Avram Hershko was a post-doctorate fellow at the University of California in San Francisco from 1969 to 1971, he made an unexpected discovery that led to his receiving the 2004 Nobel Prize in Chemistry.



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The professor at the Technion-Israel Institute of Technology tells ISRAEL21c that he was interested in examining the mechanism that causes protein degradation in living cells. He assumed it had to do with running out of energy. Surprisingly, his experiments revealed the opposite: Proteins need energy to fall apart.

“It was serendipity,” he recalls.

Rather than abandoning the research due to this unexpected result, he and his Technion graduate student, Aaron Ciechanover, spent years unravelling the mystery. They found that for protein degradation to occur, a “tag” or marker called ubiquitin must selectively attach to the protein – and this process requires energy.

“The lesson is that when you discover something that is not what you asked for, you should follow it up,” says the Nobel laureate.

Serendipity – finding something when you weren’t looking for it – was also responsible for these five significant Israeli innovations, among others.

Drought-resistant plants

Plant biologist Shimon Gepstein’s globally hailed technology for producing drought-resistant rice, wheat, sugar beets, cotton, millet and other food crops was created when he and his lab team at the Technion-Israel Institute of Technology in Haifa forgot to water some tobacco plants they had genetically engineered for an experiment in prolonging growth period and shelf life.

To their surprise, the parched plants bounced back to life when re-watered after several weeks. That is how Gepstein, now professor emeritus at the Technion and president of Kinneret College in the Galilee, discovered that the plant hormone cytokinin increases a plant’s ability to withstand drought.

The technology was patented and licenced to a California agro-tech company, which sublicenced it to seed companies that sell the product in the United States and abroad. In July 2013, a Chinese patent was approved, increasing the market for Gepstein’s unexpected discovery.


Dog vaccine

Dr Shimon Harrus was attempting to determine how long ticks must be attached to a dog’s fur in order to transmit CMT, a sometimes fatal tick-borne disease. In the process, he unintentionally found the world’s first vaccine against CMT in dogs.

“I was using bacteria I cultured in my lab, and all of a sudden I realised the two dogs in our experiment did not become sick, and the ticks I put on the dogs did not become infected,” Harrus said. “Then we performed a big study and we realised something important was going on.”

The unexpected results of the experiments done by Harrus and his lab partner, Dr Gad Baneth, led to a CMT vaccine that was licenced out by Yissum, the tech-transfer company of the Hebrew University of Jerusalem, to a Brazilian company. Harrus tells ISRAEL21c they are now working toward commercialising the vaccine.


Silicon-free solar cells

Israeli chemist Jonathan Goldstein stumbled across a novel way to produce inexpensive, clean solar energy while he was experimenting with titanium dioxide to make toothpaste flow more easily from a newfangled toothbrush he’d invented.

The cheap white powder, he discovered, is known to be sensitive to light when treated with an absorbable dye. This led him to drop the toothbrush project and go in a direction nobody had gone before.

3GSolar, the Jerusalem company born in 2003 of that chance finding, is now focusing on indoor applications for its silicon-free photovoltaic cells printed on plastic.

Goldstein says 3GSolar cells perform three times better than cells made with silicon (which is difficult to work with and dispose of) and are especially suited to the emerging and IoT and sensor markets. A Chinese investor is soon building a plant to produce 3GSolar’s dye-cell solar energy modules.


Text messages from trees

A programmable sensor that sends a message from tree roots to farmers when water levels dip below a predetermined value – or even turns on the irrigation tap itself – was developed at the Ministry of Agriculture’s Volcani Centre-Agricultural Research Organisation after unrelated research more than 10 years ago took a serendipitous turn.

Volcani soil physics researcher Arie Nadler was experimenting with an expensive new scientific device to measure water content and electrical conductivity in tree root stems at the same point and time independently. When he increased the salinity of the irrigation water, he was baffled to see no change in electrical productivity readings.

“That was absolutely unexpected since it’s been known for 300 years that if you increase the concentration of a solution you’ll always see a difference in electrical conductivity,” Nadler tells ISRAEL21c.

“And that’s where everything started, because if stem electrical conductivity depends only on water content, I now have the basis for a new cheap irrigation-control measurement tool.”

He and his research partner, citrus expert Eran Raveh, believe the device could help fruit farmers save at least 40 per cent on water and fertiliser. They are working toward receiving the patent rights and getting the product commercialised.

Assessing climate change

Prof Colin Price of Tel Aviv University’s Department of Geophysical, Atmospheric and Planetary Sciences and his graduate student Yuval Reuveni found out by accident in 2009 that observing ordinary lightning strikes can provide a definitive and reliable tool for measuring the sun’s rotation even when sunspots aren’t visible.

This is a new way for meteorologists, ecologists and space scientists to study the effects of sunspots on climate and the overall interaction between sun and Earth.

Price tells ISRAEL21c that another unanticipated discovery happened in 2013 as he and PhD candidate Israel Silber used simple radio antennae to measure radio waves reflecting back to Earth from the ionosphere.

They saw that weaker signals seem to indicate greater fluctuations in temperature in the upper atmosphere, offering a new and cost-effective way to keep tabs on climate change.


Revolutionary inorganic fullerene-like tungsten disulfide (IF) nanoparticles, created in 1992 in the lab of Prof Reshef Tenne at the Weizmann Institute of Science in Rehovot, have become indispensable in manufacturing lubricating oils, greases, coatings, metal working fluids, polymers and composites.

Menachem Genut, a member of the group that discovered the nanoparticles and successfully synthesised them, recalled: “IF was discovered by serendipity. At the Weizmann Institute, we were looking for a technology to convert solar energy into electricity.

“The result was completely unexpected. We discovered these nanoparticles which have very interesting properties – [they] act as excellent lubricants, have great shock absorbing powers, and are also efficient semiconductors.” – ISRAEL21c

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Closer ties between Zim and Israel rattles ANC



Zimbabwe and Israel have had full diplomatic relations since 1993, but further overtures by our northern neighbour to the Jewish state could cause conflict with South Africa, particularly certain factions in the African National Congress (ANC).

According to an article by Carien du Plessis published on News24 on Wednesday, 3 February, “Zimbabwe has been seeking closer ties with Israel in the hope of securing more investment and doing away with sanctions. This move has caused unease within the ANC, which has a pro-Palestinian stance, although it’s unlikely the party will act on it.

“The ruling party [in Zimbabwe], ZANU-PF, has historically positioned itself as pro-Palestinian, but Zimbabwean President Emmerson Mnangagwa’s latest move closer to Israel represents a change in policy direction,” Du Plessis writes.

She reports that although the head of the ANC committee on international relations, Lindiwe Zulu, said that, “We cannot interfere with the sovereign decisions of the governing party of any other government”, there have been divisions within ZANU-PF and within the ANC about the Israel matter.

“A pro-Palestine lobby within the ANC wants South Africa’s governing party to take a more hardline approach to its Zimbabwean counterpart, while the pragmatists prefer not to push this issue for diplomatic reasons,” Du Plessis says.

Darren Bergman, the shadow minister for international relations and cooperation and a member of the Southern African Development Community (SADC) Parliamentary Forum Human Rights Committee, didn’t mince his words about South Africa’s response.

“The people of Zimbabwe are suffering. The internal affairs of Zimbabwe couldn’t get South Africa to act, the situation in Zimbabwe couldn’t get South Africa to act, but the relationship with Israel gets South Africa to act,” he said.

“This is a sinister situation that must make the SADC and African Union [AU] question what exactly South Africa’s situation is with regard to the Middle East,” Bergman said.

“It’s one thing to have an opinion and a position, but it’s another to keep a hard-pressed, almost spiteful stance at all times that can actually harm and injure the people and the continent. To this I would say that South Africa should show diplomatic constraint, and hold back.”

One of Mnangagwa’s recent moves to improve relations with Israel is the appointment last year of Israeli national Ronny Levi Musan as honorary consul of Zimbabwe to Israel.

The Afro-Middle East Centre reported in October 2020 that, “Musan has set plans into motion for Mnangagwa’s official visit to Israel. His activities in Zimbabwe include collaboration with Pentecostal churches to push for Christian support for Israel. Zimbabwe’s honorary consul is also pushing for Israeli businesses to invest in Zimbabwe’s agricultural sector, and he recently announced the intention to open an Israeli academy of agriculture in Zimbabwe. On the diplomatic front, Israel hopes that Mnangagwa will follow the example of his Malawian counterpart, Lazarus Chakwera, who announced plans to open an embassy in Jerusalem.”

Musan told the SA Jewish Report he had worked in Africa for the past 20 years to strengthen links between churches and the Holy Land. “About five years ago, I was invited to visit Zimbabwe which lasted about two weeks. I tried to do everything possible to connect Zimbabwe to Israel on a practical level. After the first visit, I visited Zimbabwe several more times, and met a number of ministers and church leaders, and just fell in love with the place.

“From there, it continued through my activities with the Israeli foreign ministry and the foreign ministry in Zimbabwe to promote diplomatic relations between the countries.” He was eventually appointed to this role.

“My main responsibility is to do everything possible in every field to bring knowledge and support from Israel to Zimbabwe, and vice versa. The main issue is technology in the field of agriculture, education, and innovation. These are the cornerstones that will return the crown to Zimbabwe as the ‘grain basket of Africa’.”

Local political analyst Daniel Silke says that Zimbabwe’s overtures to Israel “could well be an attempt by Zimbabwe to follow the Sudan example, in which currying favour with the United States via the channel of restoring relations with Israel allows the country to receive assistance and perhaps even escape some of the worst sanctions. But, of course, [former US] President Donald Trump is no longer in the White House. Whether this will have any traction with Joe Biden, who I think will be a lot more critical of the Zimbabwean regime, remains to be seen.”

In terms of the impact it could have on South African-Israel relations, Silke says, “Many other African countries are forging their own path in terms of relations with Israel. For President [Cyril] Ramaphosa, it’s a difficult balancing act given the demands from within his own party. But I don’t think South Africa has any leg to stand on in terms of interference with any country which wishes to forge some sort of close relationship with the Jewish state. As head of the AU, Ramaphosa is again in a tough position because of the changing dynamics across Africa, but I don’t think it’s an issue that will really get much attention.”

Rowan Polovin, the chairperson of the South African Zionist Federation, says, “We see this as a positive development, particularly for Southern Africa, which is part of the momentum that is being created by the Abraham Accords.

“Northern Africa has been very much part of the momentum. In the southern region, Malawi, which is diplomatically and geographically close to South Africa, has signalled its intention to open an embassy in Israel. If all this has an impact on South Africa’s neighbours, then South Africa will see the benefits. It’s very hard to ignore the importance of building ties with Israel, which has so many solutions for African issues, particularly water, electricity, agriculture, and security. Notwithstanding the noise that the ANC might make, ultimately it’s positive.”

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Just how successful is Israel’s vaccine push?



Israel is reporting promising initial results from its COVID-19 vaccine rollout, the fastest in the world.

The first official findings released by the health ministry show that only 0.04% of people caught the virus a week after their second dose, and a mere 0.002% needed hospital treatment.

Clalit, the country’s largest health service organisation, has also released its preliminary data. It compared 200 000 people aged 60 and over who’ve been vaccinated with 200 000 similar unvaccinated older adults. It found that the rate of those who tested positive dropped 33% among the vaccinated 14 days after they received it. No decline was seen in the unvaccinated.

Maccabi, another healthcare organisation, saw an even larger drop. Infections decreased 60% among 430 000 people 13 to 21 days after they received the vaccine. The data also suggested the vaccine was 92% effective, close to the 95% efficacy claimed by Pfizer.

Israeli researchers are conducting more in-depth analysis, and point out that real-world effectiveness of vaccines is often lower than the efficacy seen in clinical trials due to a number of factors.

But experts warn that this data has yet to be published in a peer-reviewed journal so it should be viewed with some caution.

There are also various factors that could be influencing the results. The current lockdown and behaviour such as travelling and gathering less, wearing masks, and greater physical distancing might be decreasing infections.

The first people to receive the vaccine were mostly from vulnerable populations, so they are more likely to take precautions which could also skew the data.

In spite of the encouraging news, the death toll from COVID-19 continues to climb. Of the 4 816 fatalities at the time of writing, 30% occurred in January when the vaccination rollout was already in full swing. The government blames this on the more transmissible British variant of the virus, especially among children. According to Clalit, when the vaccination campaign started in late December, the new variant caused 30% to 40% of infections, whereas now that figure has doubled.

As for the South African strain, there are currently 80 detected cases in Israel, and there is concern that the vaccine isn’t as effective against this variant. A number of Israelis who previously had COVID-19 have been re-infected with the South African strain, with the most recent case identified two days ago.

Compounding the situation is the flagrant disregard by the ultra-Orthodox community, that comprises just less than 13% of the population, for lockdown rules. Since the start of the pandemic, one in five ultra-Orthodox has tested positive.

Many in the community doubt the safety of the vaccine or believe the country’s citizens are being used as guinea pigs to test its efficacy. Prominent rabbis have also said that communal prayer and study needs to overwrite lockdown concerns.

Last Sunday, 31 January, thousands of ultra-Orthodox mourners, many without masks, crowded together to attend two funerals of famous rabbis who died from coronavirus. Prime Minister Benjamin Netanyahu has been criticised for not cracking down harshly enough on the community for political reasons – he needs their votes in the upcoming 23 March election.

Residents of Tel Aviv spoke to the SA Jewish Report, complaining that the actions of the ultra-Orthodox were forcing the whole country to go repeatedly into lockdown, and it wasn’t fair. It’s no surprise thus that the latest word from the government is that the current – third – nationwide lockdown may not be Israel’s last.

Many Israelis want cities and towns to once again be divided into red, orange, yellow, and green zones and scales of restrictions to be put in place accordingly. This would mean those who obey the restrictions wouldn’t have to pay the price of those who don’t.

In recent days, there’s also growing concern in some quarters in Israel that because the mass vaccination campaign is running in parallel with an active coronavirus outbreak, it could lead to an “evolutionary pressure” on the virus in which it would ultimately become immune to vaccination. Doctors are suggesting that in future, people will need to take an annual anti-COVID-19 jab, much in the same way the annual flu injection is taken.

But for now, the race to innoculate everyone is on. Among the first to be injected were people aged 60 or older. More than two-thirds of this age group have already received the required two doses. Up to 200 000 people are being injected each day, and the vaccine is now available to anyone over the age of 35. High-school students aged 16 to 18 are also included in the hope that they will be able to sit for exams. It seems Netanyahu is on track to fulfil his promise of innoculating five million of the country’s nine million citizens by the end of March.

To date, just more than one in three Israelis has been inoculated – about 1.7 million of them twice. Because this is a far higher fraction than anywhere else in the world, it makes the country a test case for the international vaccine push.

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The right to demonstrate, even during lockdown



Israelis are being allowed out of their homes in full lockdown to call for the resignation of Prime Minister Benjamin Netanyahu (Bibi), who is viewed by many on both sides of the political spectrum as corrupt.

This freedom in a lockdown which ordinarily limits you to being no more than one kilometre from your house is based on the country’s constitutional right to protest. On bridges, at junctions, and outside Bibi’s house in Jerusalem, daily protests occur, resuming after Shabbat goes out on Saturday night.

Lech! Lech!” (Go!) is shouted loudly – which is also the name for the movement against Netanyahu.

There are some staunch Likud followers who scream, “Arafat and Rabin sold out the country,” prompting laughter amongst some demonstrators, who point out that their arguments are old and outdated. Demonstrators including doctors, lawyers, pilots, accountants, and students point out that this isn’t about the Israel-Palestine issue, it’s not about being leftist or rightist, but about ethics and bringing to justice an allegedly corrupt prime minister.

The protestors are passionate, some defying orders not to camp outside Bibi’s residence. At 21:30, police order the drums, trumpets, and whistles to cease. The protestors obey, but continue to demonstrate quietly, so as not to disturb the Jerusalem neighbourhood.

Then, at about 23:00, carrying Israeli flags in blue and white and others in red and white, the protestors pack up and go home to lockdown.

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