Record numbers of migrants seeking to cross the southern U.S. border are challenging the Joe Biden administration’s attempts to restore asylum protections. Here’s how the asylum process works.

See how six countries are faring amid efforts to protect 30 percent of the planet’s land and waters by 2030, and what will be saved if they succeed. 

As 2020 comes to a close, here are the top ten most notable world events of the past year.