Water covers nearly three-quarters of Earth. It is continuously moving above, on and below Earth’s surface, cycling among ice, liquid water and vapor. This cycling of water shapes the climate by ...

Water vapor is known to be Earth's most abundant greenhouse gas, but the extent of its contribution to global warming has been debated. Using recent NASA satellite data, researchers have estimated ...

Andrew Dessler is an atmospheric scientist at Texas A&M University. He’s an expert on water vapor, the most abundant greenhouse gas in Earth’s atmosphere. At a science meeting in late 2009, Dessler ...

This year's string of record-breaking disasters—from deadly wildfires and catastrophic floods to record-high ocean temperatures and record-low sea ice in Antarctica—seems like an acceleration of human ...

With regard to A. Frank Leo's question of why the effects of water vapor have not been considered in the discussion about global warming, I would suggest that it is because the amounts of water vapor ...

Researchers using the Hubble Space Telescope have discovered water vapor in the atmosphere of planet K2-18b, located about ...

GJ 486 b is about 30% larger than the Earth and three times as massive, which means it is a rocky world with stronger gravity than Earth. It orbits a red dwarf star in just under 1.5 Earth days. It is ...

Study adds a missing piece to the climate science puzzle of simulating clouds. Lightness of water vapor influences the amount of low clouds. Some leading climate models don't include this effect.

The U.S. Environmental Protection Agency (EPA), in its ruling last week that overturned its 2009 Endangerment Finding on greenhouse gases (GHGs), argued that in light of Supreme Court judgments since ...