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Living longer and loving it. oneinchpunch/shutterstock.com

Is 75 the new 65? Wealthy countries need to rethink what it means to be old

People who are 65 and up can expect to live longer than ever before. Does it make sense to keep classifying everyone in this group as old? A pair of demographers argue for ‘age inflation.’
From cats to dragonflies, Leonardo sketched scores of animals. Leonardo da Vinci/Royal Collection Trust

Leonardo da Vinci saw in animals the ‘image of the world’

Rather than prioritizing human beings at the pinnacle of the animal kingdom, Leonardo revered all living beings. When he compared people and animals, it’s the animals that often came out on top.
Blizzard conditions cover the Central and Northern Plains on March 13, 2019. NASA Earth Observatory

Why the Great Plains has such epic weather

What creates such dramatic storms across the US Great Plains? The key factors are topography and temperature differences.
Are space twin Scott and Earth twin Mark no longer identical? Robert Markowitz/NASA

Does a year in space make you older or younger?

Before sending humans to Mars or the moon, scientists need to understand what long-term space living does to the human body. Now results are coming in from the Kelly brothers in the TWINS Study,
Reversing lactose intolerance might make it possible for adults to enjoy a milkshake again. YAKOBCHUK VIACHESLAV / Shutterstock.com

Can changing the microbiome reverse lactose intolerance?

You may think that your milk-drinking, ice cream-licking days are behind you as you battle the discomfort of lactose intolerance. But there maybe be a way to reverse the situation.
Teachers rally outside the Arizona Capitol in April 2018 during a strike over low salaries. Matt York/AP

Are America’s teachers really underpaid?

A presidential candidate wants to use federal funds to boost teacher pay. Is the proposal justified or is it just pandering to teacher unions to get votes? An education scholar provides perspective.
House Judiciary Committee Chairman Jerrold Nadler shakes hands with Aalayah Eastmond, a senior at Marjory Stoneman Douglas High School in Parkland, Florida, during a hearing on guns violence at Capitol Hill on Feb. 6, 2019. AP Photo/Jose Luis Magana

How a ‘missing’ movement made gun control a winning issue

Gun control bills passed recently by the House of Representatives may never become law, but they are still a sign of important change.