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Eastern monarch butterflies at risk of extinction, scientists say
Populations of the charismatic orange and black monarch butterfly have plummeted. Will they be extinct in 20 years?
April 18, 2016
Powerful earthquakes in Japan and Ecuador
Japan was struck by a 7.0-magnitude earthquake on April 15, 2016. One day later, on April 16, Ecuador was struck by a 7.8-magnitude earthquake.
April 17, 2016
Top 6 things about gravity
Gravity does far more than make things fall down. It governs the motion of planets around the sun, holds galaxies together and determines the structure of the universe.
April 15, 2016
Spiders with super-fast mousetrap mouths
In the forests of South America and New Zealand, trap-jaw spiders have mouths clamp down on their quarry like a mousetrap, at lightning speeds.
April 15, 2016
Rainbows around the world
Images of rainbows from all over the world taken by EarthSky's Facebook friends. Beautiful!
April 15, 2016
Gulf of Mexico dolphin deaths likely due to oil
Study finds higher rate of illness and death in newborns and juvenile bottlenose dolphins after Deepwater Horizon oil spill.
April 12, 2016
Another wave of bird extinctions in the Americas?
Several bird species are taking their final bows on the global evolutionary stage, and winking out. The situation in northeast Brazil is particularly dire.
April 11, 2016
This ancient arthropod kept its babies on a leash
Scientists have discovered a tiny 430-million-year-old sea creature - dubbed Kite Runner - that apparently dragged its offspring around on strings like kites.
April 7, 2016
California drought now the norm?
California drought patterns have occurred much more frequently in recent decades, says a new study.
April 6, 2016
Ocean temps predict heat waves 50 days out
Scientists identified what they call the Pacific Extreme Pattern - warm seawater next to cool seawater - and showed its connection to heat waves weeks later.
April 3, 2016
