Think you know everything about our blue marble? Prove it by taking our quickfire in celebration of Earth Day
Solar System
Solar System
News
Earth Day 2019: Humanity’s devastating impact on our planet
The day marks a celebration of the ‘Pale Blue Dot’ – and the spacecraft keeping a watchful eye on climate change and human impacts
News
Massive Martian mounds point to when Mars lost its water
The location of hills on Mars helps pin down when the Red Planet dried up during a global climate change event
Solar System
VIDEO: Would your city survive a 216-foot rise in sea level?
Check out this animation that shows what Earth would look like if its polar ice caps melted