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What’s causing Florida’s algae crisis? 5 questions answered

Red tides and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists from beaches. Some causes are natural, but human actions also play a role.

The unique elephant brain

Today is World Elephant Day. Here’s a look at how unique brain structures – different from those of any other mammal – are responsible for elephants’ special abilities in learning and memory.

How NASA will shield solar probe from crazy heat

The Parker Solar Probe, expected to launch Saturday, will get closer to the sun than any spacecraft in human history. How will the spacecraft withstand the heat?

Think sharks are coolest ocean predators? Consider mantis shrimps

Do sharks have bullet-like strikes? Do they have super-vision? Can they take down prey in milliseconds? Mantis shrimps have these abilities – and more – to make them among the world’s most impressive predators.

Why wildfires are bigger and harder to control

It’s a perfect storm of factors – including climate change, development, past forest management policies and current firefighting practices, says forestry expert.

Dust in space: 10 cool things to know

In space, dust comes from comets and exploding stars. It can form planetary rings, drive global weather patterns and even form the seeds of new planets.

20 years of tracking Near-Earth Objects

Asteroid on a collision course with Earth? These astronomers will likely see it first. NASA’s Center for Near-Earth Object Studies – now entering its 3rd decade – makes over 90 percent of near-Earth asteroid and comet discoveries. Here’s how and why they do their work.

Which lizards can outlast a hurricane?

In the wake of hurricanes Irma and Maria, researchers document how catastrophic storms can be agents of natural selection, influencing how species evolve.

12 shark facts that might surprise you

#5 If you flip a shark over, it goes into a trance.

Is the moon toxic to humans?

When the Apollo astronauts returned from the moon, the dust that clung to their spacesuits made their throats sore and their eyes water. Lunar dust is made of sharp, abrasive particles, but how toxic is it for humans?