Early Earth was bombarded by series of city-sized asteroids

Scientists know that the Earth was bombarded by huge impactors in distant time, but a new analysis suggests that the number of these impacts may have been 10 times higher than previously thought. This translates into a barrage ...

Rattlesnakes may like climate change

When it comes to climate change, not all organisms will lose out. A new Cal Poly study finds that rattlesnakes are likely to benefit from a warming climate.

Ozone pollution has increased in Antarctica

Ozone is a pollutant at ground level, but very high in the atmosphere's "ozone layer," it absorbs damaging ultraviolet radiation. Past studies have examined ozone levels in the Southern Hemisphere, but little is known about ...

Facing water security challenges in the world's drylands

Recent research—published ahead of World Day to Combat Desertification and Drought on 17 June 2021—examines current and projected climate change impacts on water security across the world's drylands up to the year 2100.

Human-driven climate change only half the picture for krill

In the heart of their Antarctic habitat, krill populations are projected to decline about 30% this century due to widespread negative effects from human-driven climate change. However, these effects on this small but significant ...

First global statistical analysis of harmful algal blooms

The first-ever global statistical analysis of trends in harmful algal blooms (HABs) has shown that, worldwide, there is no significant increase in HABs events, but that in some regions, events that include toxic species of ...

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