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Image via Wikipedia
FAQs | Sep 20, 2014

Why aren’t day and night equal on the day of the equinox?

On the day of the equinox, the center of the sun would set about 12 hours after rising – given a level horizon, as at sea, and no atmospheric refraction.

June - August 2014 via NOAA
Blogs | Sep 19, 2014

June through August 2014 hottest ever recorded globally

June through August 2014 is the warmest period recorded since record keeping began in 1880, NOAA says. Also, the warmest August since 1880.

The Ngogo males have just killed a male from a neighboring group. After the male is dead, one of the Ngogo males leaps on the body of the dead animal. Image courtesy of John Mitan
Science Wire | Sep 19, 2014

Chimpanzee wars not due to human influence, says study

Lethal aggression is something that chimpanzees naturally do, the study says, regardless of whether human impacts are high or low

spacecraft voyager 1
This Date in Science | Sep 18, 2014

A first glimpse of Earth and moon as worlds in space

As Voyager 1 left Earth on September 18, 1977, it looked back and acquired a stunning image.

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Blogs | Sep 18, 2014

Kilauea volcano lava continues to advance

Lava flow on the northeast side of Kilauea – Hawaii’s most active volcano – is setting trees and shrubs in its path on fire, but the fires are not spreading officials say.

Image via Flickr user Kelly DeLay
Science Wire | Sep 17, 2014

Tornado Alley storm season starting and ending earlier

Peak tornado activity typically occurs in the region from early May to early July. It has moved an average of seven days earlier over the past six decades.

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Science Wire | Sep 17, 2014

New map of 15 years of CO2 emissions

An international research team has developed a new system to quantify 15 years of CO2 emissions, every hour, for the entire planet, down to the city scale.

Photo credit: Mahatma4711
Blogs | Sep 16, 2014

A push for climbing reform after Sherpa deaths on Everest

In the wake of the deaths of 16 Nepalese guides on Mount Everest in April 2014, many groups push for reform of climbing expedition practices.

NASA Earth Observatory images created by Jesse Allen, using digital photographs provided by Kelly Brunt, MABEL campaign.
Science Wire | Sep 16, 2014

Earthquake-induced landslide at Seward Glacier

NASA scientists were in the right place at the right time this summer to capture photos of a fresh landslide, caused by an Alaska earthquake.

Airport in Cabo San Lucas, via @MexicanadeModa
Blogs | Sep 16, 2014

Major Hurricane Odile slams Baja Peninsula in Mexico

Major Hurricane Odile struck the Baja Peninsula and left extensive damage and flooding across the area. Photos of the damage and firsthand reports, here.

Image credit: Davide Bonadonna
Science Wire | Sep 15, 2014

Bigger than T. rex, this dinosaur hunted in water

Spinosaurus was the largest known predatory dinosaur to roam the Earth. Scientists now say that it was also the first truly semiaquatic dinosaur.

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Blogs | Sep 15, 2014

New report detects substantial rise in greenhouse gases

The most recent rise in carbon dioxide is the largest annual change seen for this gas since 1984.

Image credit: University of Birmingham
Science Wire | Sep 12, 2014

New scans reveal hidden monuments of Stonehenge

The startling results of a new survey include 17 previously unknown monuments and dozens of burial mounds surrounding Stonehenge.

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Blogs | FAQs | Sep 11, 2014

What are cloud streets?

Cloud streets are long rows of cumulus clouds that are oriented parallel to the direction of the wind. Check out these cool images!

Image Credit: Don DeBold
Blogs | Sep 10, 2014

Lifeform of the week: Skunks

Evolutionary biology can explain skunks’ striking appearance, but only chemistry can get rid of the smell.

Photo credit: Almannavarnir
Sep 09, 2014

Craters have appeared on two glaciers in Iceland

The recent volcano eruptions in Iceland have created enormous circular depressions in two of the country’s glaciers.

Super Harvest Moon 2014 by Annie Lewis
Today's Image | Sep 09, 2014

Shine on Harvest Moon!

In case you missed it! Photos of the 2014 Harvest Moon from EarthSky friends.

Ozone hole over Antarctica at the peak of this year's season of ozone depletion, October, 2013.  Image via NASA/Ozone Hole Watch.
Science Wire | Sep 08, 2014

What’s the source of a mysterious ozone-depleting chemical?

The Montreal Protocol put the brakes on ozone-depleting chemicals 30 years ago. But one compound is still abundant in Earth’s atmosphere. Where’s it coming from?

Photo credit: J Gilpatrick/M Lynn/NOAA
Science Wire | Sep 08, 2014

California blue whales rebound from whaling

In a conservation success story, the number of California blue whales has rebounded to near historical levels after being hunted to near extinction.

The Global Shorebird Counting is one of the key events of the World Shorebirds Day. This is not particularly a citizen science program, but rather an effort to rise awareness for the importance of regular bird monitoring as the core element of bird protection and habitat conservation.  Photo via World Shore Bird Day.
Science Wire | Sep 06, 2014

Today is the first-ever World Shorebirds Day

Saturday, September 6, 2014, is the first World Shorebird Day. How to participate, here.

Screen Shot 2014-09-04 at 1.37.28 PM
Science Wire | Sep 04, 2014

Researchers discover remains of colossal 65-ton dinosaur

Researchers have uncovered a 77-million year old, plant eating, super-massive Titanosaur. The huge animal weighed as much as a herd of elephants.