Showing results 1-10 of 25 for 'earth'
Looking back at the very earliest oceans, Dr. Itay Halevy found that they started off acidic and gradually became alkaline. His work sheds light on how levels of ocean acidity in the past were controlled by carbon dioxide in the atmosphere, an important process for understanding the effects of climate change, as today the oceans are again becoming acidic.
How were the Earth's solid deposits of iron ore created? While researching possible conditions on Mars, Dr. Itay Halevy discovered "green rust" - rare today, but apparently common billions of years ago. While this would have been just one of several means of iron deposition, green rust seems to have delivered a large proportion of iron to our early ocean.
The Institute’s Prof. Brian Berkowitz visited Arizona to speak about ensuring safe drinking water, an increasingly critical topic worldwide. The Jewish News talked with Prof. Berkowitz, who addressed of the importance of basic research, particularly in creating the “accidental” discoveries that can lead to the greatest breakthroughs.
If it eats, it excretes – including microbes. Having digested organic matter on Earth for about 3.5 billion years, their waste contains a record of how our environment has changed. However, no one has been able to interpret the information in microbial “fecal prints”– until now. Weizmann’s Dr. Itay Halevy and McGill’s Dr. Boswell Wing have cracked the case.
Three updates from the labs of the Weizmann Institute: at last, water on Mars explained; identifying an unusual zinc-pump mechanism that may be faulty in Alzheimer’s disease; and finding that microbes that breathe sulfur prefer it to be light.
The ocean covers more than 70 percent of Earth’s surface – and rising. As our weather changes, Weizmann Institute scientists are studying the ocean, using everything from microscopes to satellites, to understand its relationship with our climate. What will the future bring?
Update from the Weizmann Institute: Prof. Ilan Koren’s research suggests that human activities may be producing larger, higher clouds with greater greenhouse effect. Using data from NASA’s CERES and elsewhere, his findings indicate that, in pre-industrial times, there was less cloud cover over areas of pristine ocean than today.
The Green Revolution may have saved a billion people from starvation, but at a price we are just now reckoning: a huge increase in the use of environment- and health-wrecking pesticides and chemicals. But with technology developed at the Weizmann Institute and commercialized by Israeli start-up Catalyst AgTech, these consequences may be reversed.
The Jerusalem Post reports that Weizmann and an agrochemicals firm are commercializing a new technology to stop toxic pesticides from getting into groundwater. Based on research by Prof. Brian Berkowitz and Dr. Ishay Dror, the method employs environmentally friendly substances to help protect our water.
Weizmann’s Dr. Assaf Vardi led a team of more than 30 scientists on a trip to the North Atlantic to study phytoplankton. These tiny algae are crucial to Earth's ecology and are key to climate regulation; in fact, they play an ancient and outsized role in our environment.