Fragile Planet?: Study Finds Earth Is Weaker Than Once ThoughtThe researchers say a key substance found in Earth's interior is weaker than scientists had thought for years.
This Species Will Outlive The Sun And Be The Last Living Thing On Earth, Study SaysThis eight-legged "water bear" is just half a millimeter in size and can go 30 years without food or water.
For Third Straight Time, Earth Sets Hottest Year RecordGovernment scientists say the Earth sizzled to a third straight heat record last year.
Jackpot: Scientists Find Earth-Like Planet At Star Next DoorAfter scanning the vast reaches of the cosmos for Earth-like planets where life might exist, astronomers have found one right next door.
Mars To Appear Exceptionally Bright This WeekendKeep your eyes on the sky this weekend for two big celestial events.
36K Selfies Used To Create Earth Day Mosaic
Asteroid Whizzes Past Earth, Captures World’s AttentionRarely is there a story that captivates the world's attention as this one has. An asteroid, the size of an apartment building, whizzed past earth. Millions monitored the momentous occasion via the Internet on Friday afternoon.
Spectators Gather For Transit Of VenusAt least 200 people gathered at the Carnegie Science Center to witness a celestial event that won’t happen again in this lifetime. The planet Venus began to cross the face of the sun, as viewed from Earth in the 6 p.m. hour.
Look Up To See “SuperMoon” On SaturdayYou might notice the full moon over Pittsburgh looking a little brighter than usual this weekend.