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Brain cells that make you feel full also make you crave dessert

Once you’re stuffed from a big meal, most foods lose their appeal. But see a sweet treat and you might be ready to make room for more. Some people joke…

Experiment: Blow the best homemade bubbles

Objective: Test if adding glycerin or corn syrup improves a bubble solution Areas of science: Chemistry Difficulty: Easy beginner Time required: ≤ 1 day Prerequisites: None Material availability: Readily available…

Sheep, llamas and goats fall for optical illusions too

People around the world keep goats, sheep, llamas and other ungulates as pets and livestock. Yet very little is known about how these animals think and perceive the world. Alina…

Let’s learn about vaccines

Vaccines have made the world a much safer place — especially for children. Before vaccines, many kids suffered from debilitating or deadly infections. Such horrible illnesses included measles, polio and…

Parakeets talk using brain areas similar to ours

Parrots are natural chatterboxes. Small parrots known both as parakeets and as budgerigars make this chatter in ways remarkably similar to the way we do it. Researchers shared the new…

This electric ‘slime’ might help injuries heal faster

When you break a bone or scrape an elbow, your body calls in healing cells. That S.O.S. takes the form of an electrical signal. A new gel that oozes like…

Freshwater fish are in trouble: Here’s how we can help them

Fishing is a way of life for people who live on the floating villages of Cambodia’s Tonle Sap Lake. These Southeast Asians depend on fish that migrate in and out…

How many legs does it take to escape a predator?

Abstract Why do animals have such different shapes and sizes? Many animals are hunted by predators. Prey animals have features that help them escape these predators. For example, some animals…

A new map of Africa sheds light on the origins of enslaved people

A little-known element is shedding light on the birthplaces of enslaved Africans sent to other continents. From the 1400s to the 1800s, more than 12 million Africans were sold into…

For some trees, acting as lightning rods helps them survive

Getting hit by lightning is not usually good. But one tropical tree seems to invite heaven’s wrath. In fact, it can benefit from a powerful electric jolt or two. The…