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China's top weather scientist has made a rare official acknowledgement: climate change, he says, could have a "huge impact" on the country's crop yields and infrastructure.

Zheng Guogang, the head of China's meteorological administration, tells Xinhua news agency that China is already experiencing temperature increases that outpace those in other parts of the world.

As a result, China – the world's biggest emitter of greenhouse gases — faces a possible "ecological degradation," he says.

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SCOTT SIMON, HOST:

A team of scientists recently created some fake, glowing mushrooms and scattered them in a Brazilian forest in hopes of solving an ancient mystery: Why do some fungi emit light?

A new technology called CRISPR could allow scientists to alter the human genetic code for generations. That's causing some leading biologists and bioethicists to sound an alarm.

Sorry bacon lovers, we've got some sad news about your favorite meat.

To get those sizzling strips of pork on your plate each morning takes more antibiotics than it does to make a steak burrito or a chicken sausage sandwich.

Pig farmers around the world, on average, use nearly four times as much antibiotics as cattle ranchers do, per pound of meat. Poultry farmers fall somewhere between the two.

Whatever lands you in the hospital or nursing home also puts you at risk for acquiring an infection, possibly one that's resistant to antibiotic treatment.

Staph infections are common problems in health care facilities, and many Staphylcoccus aureus bacteria are now resistant to drug treatment.

Chances are you've heard of MRSA, which is the kind of staph that isn't susceptible to methicillin, the antibiotic that used to be a silver bullet.

The Department of the Interior has unveiled new regulations on hydraulic fracturing operations that take place on federal lands, requiring companies using the drilling technique to ensure wells are safe and to disclose chemicals used in the process.

The rules change follows a more than three-year review process and will affect the 90 percent of oil and gas wells on federal lands that now use so-called fracking to extract oil and gas.

People throughout Europe, as well as parts of the Middle East, Russia, Africa, Asia and South America, got a stunning view of a partial solar eclipse Friday. A very few lucky ones at sea and in the high Arctic caught a glimpse of the same event as a total eclipse, as the moon passed in front of the sun.

Sky and Telescope magazine wrote earlier this month:

Spring is officially here and that means flowers, gardens and bugs. At least one man couldn't be happier about the return of insects — especially the ones that hurt.

The story of how kale went from frumpy to trendy is a great inspiration to Gabriela Bradt, a fisheries specialist at the University of New Hampshire in Durham.

"Nobody cared about kale. Then it became the green du jour," says Bradt.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

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MELISSA BLOCK, HOST:

More than 5 million Americans have dementia, and that number is only climbing. Each case leaves some people wondering what's left in a friendship when the bond between confidants becomes literally unthinkable, when language and thinking fail. But a good friend can sometimes help in ways that a spouse, a child or a paid professional can't.

For the past two years, at an undisclosed location in the Upper Midwest, a large commercial egg farm has been probed with every tool of modern science. Researchers have collected data on feed consumed, eggs produced, rates of chicken death and injury, levels of dust in the air, microbial contamination and dollars spent. Graduate students have been assigned to watch hours of video of the hens in an effort to rate the animals' well-being.

For the first time, biologists have caught a rare type of coral in the act of reproducing, and they were able to collect its sperm and eggs and breed the coral in the laboratory.

The success is part of an effort to stem the decline in many types of coral around the world.

Dr. Jeremy Greene sees a lot of patients with diabetes that's out of control.

In fact, he says, sometimes their blood sugar is "so high that you can't even record the number on their glucometer."

Greene, a professor of medicine and history of medicine at Johns Hopkins University, started asking patients at his clinic in Baltimore why they had so much trouble keeping their blood sugar stable. He was shocked by their answer: the high cost of insulin.

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