For example, take rain on a frigid day ... rakes the fragments back and forth into fine sand. Plants and animals also take a heavy toll on Earth's hardened minerals. Lichens and mosses can ...

The study found that increased dryness reduces plant diversity, especially after droughts. Rainfall boosts diversity during ...

Indeed, scientists have long wondered why land plants did not emerge on Earth until 450 million years ago, even though their progenitors, cyanobacteria, had been in existence for 2.7 billion years.

The Black Triangle gets its name from the coal burned by nearby power plants ... and block out the sun for months. Temperatures would drop, and corrosive acid snow and rain would fall.

Rainforests in these regions cover just 2% of Earth's total surface area and yet house half of the world's plant and animal species. Deforestation is the clearing of forests. Most deforestation ...

Indeed, scientists have long wondered why land plants did not emerge on Earth until 450 million years ago, even though their progenitors, cyanobacteria, had been in existence for 2.7 billion years.