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Are we in a sixth mass extinction?
This short video puts modern extinctions in context by comparing them with Earth's 5 previous mass extinctions.
September 29, 2016
Shark and tuna convergent evolution
Lamnid sharks and tuna have similar physical traits that make them top ocean predators. But, a new study says, they took very different evolutionary paths.
September 28, 2016
Melting sea ice leaves polar bears hungry
“Sea ice really is their platform for life. They are capable of existing on land for part of the year, but the sea ice is where they obtain their main prey.”
September 24, 2016
Satellite sees 3 California wildfires
There were more than a dozen wildfires burning in California, as of September 20.
September 20, 2016
Arctic sea ice 2nd-lowest on record
Summertime sea ice in the Arctic reached a minimum on September 10 (unless it goes lower still). It's now tied for the second-lowest minimum in the satellite era.
September 19, 2016
Crack advances across Antarctic ice shelf
Satellite images of the crack in Antarctica's Larsen C ice shelf. If it breaks off, it'll make an ice island in the Southern Ocean as large as one of the smallest U.S. states.
September 17, 2016
Shine on, Harvest Moon!
Photos of 2016's beautiful Harvest Moon from the EarthSky community.
September 16, 2016
Probably no La Niña in late 2016
An extremely strong El Niño was in progress earlier this year. Historically, some are followed by a La Niña, but ocean temps suggest … not this year.
September 14, 2016
August 2016 ties July for hottest month
The record-warm August continues a streak of 11 consecutive months that have set new monthly high-temperature records.
September 14, 2016
