Add Yahoo as a preferred source to see more of our stories on Google. The island nation of Tuvalu is losing land to sea-level rise, and its farms and water supplies are under threat from salt water.

For years, computer simulations of the earliest galaxies have struggled to match what telescopes actually show. Depending on ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Climate models are complex, just like the world they ...