For you, Valentine: 10 reasons we fall in love

On this Valentine’s Day 2019, what the world of science suggests about the mystery we call love.

Today in science: Maarten Schmidt and quasars

In 1963, astronomer Maarten Schmidt had a sudden revelation that quasars are exceedingly distant and unimaginably luminous. His insight changed our notion of what the universe is like.

Michael Peres on how to photograph snowflakes

An expert photographer of nature’s beauty on a minuscule scale, Michael Peres offers you tips on how you can photograph snowflakes.

Solstice tale of two cities

December solstice sunrise comes at the same time for St. Augustine, Florida, and New York City. But St. Augustine has an hour more of daylight than New York. Here’s why.

Today in science: An island is born

On November 14, 1963, crew aboard a trawler sailing near Iceland spotted a column of smoke rising from the sea surface. A new island, Surtsey, was being born.

Today in science: Albert Einstein and E=mc2

Mass and energy are interchangeable.

It’s Mid-Autumn Festival time in Asia

In China and other Asian countries, it’s sometimes called the Moon Festival in honor of the upcoming full moon.

Today in science: A moon for Mars

American astronomer Asaph Hall discovered Phobos, 1 of the 2 known Martian moons, on this date in 1877.

It’s summer. What’s noon to you?

What do you mean by noon? Do you define it by your clock or wristwatch? Or the gnawing in your stomach? Here’s how astronomers think about noontime.

Celebrate the solstice with this cool solargraph

The streaks in the photos are sun-trails – that is, they’re the sun moving in its shifting path across our sky from day to day over a 6-month period.

Summer solstice tale of 2 cities

On the June solstice, the sun will set at the same time in New York City and St. Augustine, Florida. But New York will have an hour more of daylight. How’s that happen?

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You can’t walk on these cloud streets

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

What is a coronal mass ejection?

Want to brush up on your knowledge about these solar hiccups – CMEs, for short – that can ripple through our solar system and can interrupt satellites and power grids on Earth?

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.

A Carolina chickadee with a juicy caterpillar. Photo courtesy of Desiree Narango and Doug Tallamy.

Want birds in your yard? Plant native trees

A recently published study confirms that native trees are most effective in hosting caterpillars, an important food for birds.

Happy Friday the 13th

When a common year of 365 days starts on a Sunday, as it did this year, 2 Friday the 13ths are inevitable. The 1st one was in January and the 2nd in October.

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.

Solar eclipse marked beginning of Iroquois Confederacy

A total solar eclipse of August 22, 1142 may have coincided with the birth of the Iroquois Confederacy, oldest democracy in North America and possibly on Earth.

Video: Moon hoax not

SG Collins explains why the Apollo moon landings on the moon in the late 1960s and early ’70s couldn’t have been faked.

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.