This is SCIENCE FRIDAY. I'm John Dankosky. Some 30,000 people die on U.S. roads every year, but the highway isn't just dangerous for us humans. Scientists estimate that our cars and trucks kill 80 million birds a year. That's 80 million. That death toll is high enough, they say, that it's turning out to be a powerful force of natural selection. In fact, some birds may be evolving shorter wings to let them navigate traffic more safely. That's according to a paper out this week in the journal Current Biology.
This is SCIENCE FRIDAY. I'm John Dankosky. It sounds like something from a science fiction movie, researchers using cutting-edge biotech methods to bring an extinct species back to life. As a matter of fact, I think I saw that one. It was called "Jurassic Park."
Babies as young as nine months appear to approve of people who like what they like — and approve of being mean to those who don't share their tastes. Kiley Hamlin, lead author of a study in the journal Psychological Science, discusses the importance of similarity to young children.
This is SCIENCE FRIDAY. I'm John Dankosky. Ira Flatow is out this week. Last December, Steven Coughlin, an epidemiologist at the Veterans Affairs Office of Public Health, resigned his position. And last week he told a congressional subcommittee why. He had serious ethical concerns about the research being done on Gulf War Illness at the VA.
Ken Caldeira of the Carnegie Institution for Science takes a water sample during his experiment out on part of the Great Barrier Reef. The water is slightly pink because his team is using a dye to trace an acid-neutralizing chemical as it flows across the reef.
Credit Richard Harris / NPR
Caldeira (left) tosses some plastic tubing that will pipe in the antacid, mixed with nontoxic red dye, from a floating tank nearby to see whether the reef will grow faster under less-acidic conditions.
NPR Science Correspondent Richard Harris traveled to Australia's Great Barrier Reef to find out how the coral reefs are coping with increased water temperature and increasing ocean acidity, brought about by our burning of fossil fuels. Day 4: Richard catches up with one of the gurus of climate science out on the reef.
Ken Caldeira loves a challenge, and he has a big one right under his feet. He's standing on an expanse of coral reef out in Australia's Great Barrier Reef. It's being washed with water as the tide streams over the reef, from a lagoon to the open sea.