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Itay Halevy

A satellite image of Olympus Mons, Mars, the largest volcano in the solar system at about three times the height of Mount Everest. Around 3.5 to 4.0 billion years ago, the release of volcanic gases, especially the greenhouse gas sulfur-dioxide, may have warmed the surface of Mars episodically, thereby explaining the presence of geomorphological features indicative of the flow of water on the planet's ancient surface
18.11.2014

A new model suggests volcanic activity in Mars’ distant past spewed enough greenhouse gases to warm the atmosphere and melt the ice
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Microbes Take their Sulfur Light
18.11.2014

A model explaining the preferences of deep-sea microbes can help reveal the ancient past – as well as predict the future

(l-r) Drs. Harry and BenjaminTowbin and Nora
01.01.2014

Drs. Harry Towbin and Benjamin Towbin talk about what drew them to the Weizmann Institute

Iron pyrite crystal (Thinkstock photos)
28.08.2012

As sulfur moves through the environment, it helps regulate oxygen in the atmosphere

Iron pyrite. Photo: Thinkstock
23.07.2012

The sulfur-based chemistry of iron pyrite may play a major role in atmospheric oxygen concentrations
 

How does rock weathering affect the ocean's acidity?
14.03.2017

A model of ion flux in the oceans shows carbon dioxide driving ocean acidity

green rust in the lab
26.01.2017

A Weizmann lab recreates a primary mechanism by which today's ore deposits originally formed

Roy Naor
02.01.2017

Israel’s official representative prepares to conduct geological research in a simulated Mars station