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Deanna Conners

When is the next leap year?

If there were no leap years, eventually February would be a summer month for the Northern Hemisphere. 2018 isn’t a leap year, but 2020 will be.

Great Backyard Bird Count February 16–19

Scientists need your help counting birds for the 21st annual Great Backyard Bird Count. It is free and easy to participate. Find out how here.

How 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.

Audubon’s Christmas Bird Count starts December 14

Audubon Society’s Christmas Bird Count is one of the longest-running citizen science projects in existence. Here’s how to participate.

How tiger sharks are helping seagrass

A heatwave in 2011 killed off seagrass beds in Shark Bay, Australia. Now, scientists have discovered that tiger sharks are helping the ecosystem recover.

Why trees shed their leaves

Something to think about while raking.

Largest-ever Gulf of Mexico dead zone

For 32 years, scientists have tracked the oxygen-depleted waters that appear each summer in the Gulf of Mexico. This year’s dead zone is the biggest yet.

These bees nest in sandstone

Rock is apparently no match for Anthophora pueblo bees. Scientists have found their sandstone nests scattered across dry lands in the U.S. Southwest.

Today in science: Bingham Canyon landslide

On April 10, 2013, one of the largest non-volcanic landslides in the history of North America took place at the Bingham Canyon mine in Utah.

Why pine trees smell so good

Pine, spruce, and fir trees – Christmas tree favorites – produce chemicals called terpenes, which give them their special, distinctive scent.