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Posts by Deanna Conners

Blogs | Apr 20, 2015

Ocean acidification drove Earth’s largest mass extinction

New evidence suggests that ocean acidification played a key role in the Permian–Triassic mass extinction event 252 million years ago that killed most life on Earth.

Blogs | Apr 01, 2015

Spring means these 4 hibernators are waking up

With the onset of spring in the Northern Hemisphere, animals that hibernate are waking up from a long-period of deep sleep.

Photo credit: Jane Wildoner
Science Wire | Mar 20, 2015

Why does Earth have four seasons?

Many believe Earth’s changing distance from the sun causes the change in the seasons. But that is not the case.

Blogs | Mar 15, 2015

El Niño has arrived, says NOAA

After months of anticipation, the NOAA Climate Prediction Center finally issued an El Niño advisory on March 5. How will it affect your weather?

Blogs | Mar 09, 2015

Good news! Young tortoises spotted on Galapagos island

Tortoise hatchlings spotted on the island of Pinzón last year are the first to have survived there in more than a century. Thanks to conservation efforts, tortoises are making a comeback.

Earth and moon via NASA
Blogs | Feb 23, 2015

When is the next leap year?

No leap year in 2015. The next leap day will be February 29, 2016. The reason for leap years explained here.

Image credit: NASA
Blogs | Feb 21, 2015

High risk for future U.S. megadroughts

The U.S. Southwest and Central Plains are at high risk for a megadrought later this century if greenhouse gas concentrations continue to rise, says a new study.

Blogs | Feb 12, 2015

The 2015 Great Backyard Bird Count starts February 13

This year’s Great Backyard Bird Count runs from February 13 to February 16. It’s free and easy to participate. Find out how here.

FAQs | Feb 02, 2015

What do you know about the Yellowstone supervolcano?

Beneath Yellowstone National Park lies a volcanic hotspot. The most recent enormous eruption occurred 640,000 years ago. What’s going on now?

FAQs | Jan 26, 2015

How do snowflakes get their shape?

Depending on the temperature and humidity of the air where the snowflakes form, the resulting ice crystals will grow into a myriad of different shapes.