Neckties Are Bad For Your Brain

Until now, business attire for men has meant a suit, collared shirt, and a necktie. Many men have dispensed with neckties, and that may be smart. Wearing neckties can reduce blood flow to the brain by 7.5 percent. If you already have high blood pressure, that could make you dizzy, nauseous, or bring on headaches. A tight necktie can even contribute to glaucoma.

If you’ve been looking for an excuse to pop your collar button, you’re welcome.

More:

“Wearing a tie may be restricting blood flow to your brain,” Alice Klein, New Scientist

“Another reason not to wear a tie: It could be cutting the blood flow to your brain,” Seattle Times

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February 14th: The Science of Love

On this Valentine’s Day, Mitchell Moffit and Gregory Brown explain the science of love. An ASAPscience video.

Related:

“Valentine’s Day, by the numbers,” Belle Reynoso, CNN Library

“Heart Shaped Meals for Valentines Day,” Mental Floss

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Happy Birthday Charlie Darwin

 

Charles Darwin was born on February 12, 1809. His birthday has, um, evolved into a worldwide celebration of science and rational thought, Darwin Day.

More:

“For Darwin Day, 6 facts about the evolution debate,” David Masci, PewResearch.org

“Rewriting Nature: Charles Darwin, natural novelist.” Adam Gopnik, The New Yorker

The complete works and manuscripts of Charles Darwin are available online, free.

Best Darwin Day graphic.

Bonus: Darwin, the comic book.

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Microorganisms: How micro are they?

Comparison of some of the smaller microorganisms. A video by Alvaro Gracia Montoya.

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Ocean acidification explained in 2 minutes

“Ocean acidification explained in 2 minutes,” a Grist video animated by Amelia Bates and written by Amelia Urry.

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Martian Water

There’s a 12-mile-wide lake of liquid water a mile beneath the southern ice cap of Mars. The discovery was made using the Marsis radar instrument on board the European Space Agency’s Mars Express, which has been orbiting the red planet for 15 years. Thirsty astronauts shouldn’t expect instant refreshment, though. The lake is filled with salt water.

More:

“Mars: huge underground lake raises prospects of life on planet, astronomers say,” Ian Sample, The Guardian

“A 12-mile-wide body of water lies beneath a Mars ice cap,” Carolyn Y. Johnson, Washington Post

“Scientists detect giant underground aquifer on Mars, raising hope of life on the planet,” Loren Grush, The Verge

“Liquid water ‘lake’ revealed on Mars,” Mary Halton, BBC News

“Deep within Mars, Liquid Water Offers Hope for Life,” Lee Billings, Scientific American

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Walking On Water

Water striders (aka pond skaters) flitter across the surface of ponds and slow-moving streams. How do they walk on water, and why? A KQED video.

Read more here.

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Dinosaurs: What Color Were They?

From Eons/PBS Digital Studios.

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Equinox

March 20th marks the Equinox, when day and night are of equal length. The March Equinox is often called the Spring or Vernal Equinox in the Northern Hemisphere (where days will now get longer) and the Fall or Autumn Equinox in Southern latitudes (where days will start to shorten).

Okay, days still stay 24 hours long, it’s the periods of daylight that get longer and shorter. Come on, lighten up. The UN says March 20th is also the International Day of Happiness.

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Ocean Acidification: A Crash Course

As the ocean absorbs carbon dioxide from the atmosphere, it’s becoming more acidic—eroding the shells of marine life vital to the food web. Jim Toomey illustrates the issues. Produced by the Pew Trusts.

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