The ocean is increasingly absorbing CO2 from the atmosphere, raising the water's acidity and endangering sea life.
Like its Roman-god namesake, Mercury is known for extreme behavior.
We can manufacture ozone molecules from oxygen, but not enough to patch up the ozone layer.
After a nine-year expedition, the New Horizon spacecraft finally reached Pluto to see what's at the heart of the exoplanet.
The moon landing was in fact staged (on the moon) with special flag engineering.
On this edition of A Moment Of Science, we check out some of the atmosphere's many layers.
There are emergency exits, emergency slides, emergency air masks and emergency flotation devices. Why not parachutes too?
When looking at a picture of the sun, how could you tell whether or not it's rising or setting?
Planning on climbing Mount Everest? You might want to plan to be gasping for air. Learn more on this Moment of Science.
When Neil Armstrong took his "one small step", the impression he made was lasting.