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Their hormones mean they still need zzz’s even when they’re already supposed to be in homeroom. Antonio Guillem/Shutterstock.com

Sleepy teenage brains need school to start later in the morning

Teenagers aren’t just lazy. Their sleep hormones aren’t calibrated to let them get up and go until later in the morning – which has academic and health consequences when school starts too early.
Satellite image on Sept. 7, 2017 shows three hurricanes: Irma in the center just north of the island of Hispaniola, Katia on the left in the Gulf of Mexico and Jose in the Atlantic Ocean on the right. NOAA via AP

Do hurricanes feel the effects of climate change?

What scientists know – and don’t know – about the linkage between climate change and hurricanes.
Hurricanes Harvey and Irma caused widespread power outages. AP Photo/Eric Gay

Should the US put power lines underground?

Would putting power lines underground avoid hurricanes knocking out electricity service for millions of people? The answer is not as straightforward as it seems.
Damage from Irma can be seen in this photo of Kelly McClenthen in Bonita Springs, Florida, as she returned to her home Sept. 11, 2017. AP Photo/Gerald Herbert

What do hospitals do in a hurricane? Use their own emergency plans

Even in areas predicted to take direct hits from hurricanes and other storms, hospitals must do all they can to stay open. It isn’t an easy task, but preparation and practice help.
More cryptocurrencies appear all the time. Wit Olszewski/Shutterstock.com

Are cryptocurrencies a dream come true for cyber-extortionists?

Cybercriminals increasingly depend on e-currencies to profit from their misdeeds. They, and their potential victims, could be driving some of the growth in cryptocurrency markets.
For safety, look to text-only messaging. The Conversation, via picascii.com, publicdomainpictures.net and kelvinsong

The only safe email is text-only email

It’s impossible to be certain of safety while using Gmail, Yahoo mail and other web-based email systems. The best solution is a radical one: It’s time to return to plain, text-only email.
Colleen Burge counts oysters on an oyster aquaculture lease in California. Collin Closek

A deadly herpes virus is threatening oysters around the world

Oysters grow in seawater and filter their food from it, so how do you shield them from waterborne diseases? Scientists are working to develop strains that are resistant to a fast-spreading herpes virus.
A woman with symptoms of cholera walks into a cholera treatment center at Immaculate Conception Hospital in Les Cayes, Haiti in November 2016 in the aftermath of Hurricane Matthew. Reuters/Andres Martinez Casares

Cholera fears rise following Atlantic hurricanes: Are we making any progress?

Surviving a hurricane in poor countries such as Haiti is no guarantee of surviving the secondary problem of cholera.
Hurricane Irma descends on the Caribbean islands. NOAA National Weather Service National Hurricane Center/Handout via Reuters

Are catastrophic disasters striking more often?

Saturated media coverage of hurricanes like Harvey and Irma can make it seem like disasters happen all the time. Is the frequency of billion-dollar disasters really rising?
Flooding from Hurricane Harvey. Can the region rebuild infrastructure so that it can better withstand extreme weather events? AP Photo/David J. Phillip

6 rules for rebuilding infrastructure in an era of ‘unprecedented’ weather events

After extreme weather events like Hurricane Harvey, city planners need to think about the smartest way to rebuild. Here are some no-regrets infrastructure investment ideas.