We're doomed to be miserable if we don't get what we want — right? Not quite, says psychologist Dan Gilbert. He says our "psychological immune system" lets us feel truly happy even when things don't go as planned.
When are humans most happy? To answer this question, researcher Matt Killingsworth built an app, Track Your Happiness, that let people report their feelings in real time. Among the results: We're often happiest when we're lost in the moment.
A residential area is covered with ash from the Mount Kelud volcano, in Yogyakarta, Indonesia, on Friday.
Credit Bimo Satrio / EPA/Landov
The second major volcanic eruption in as many weeks in Indonesia has killed at least three people and forced the evacuation of tens of thousands on the island of Java, as Mount Kelud spewed ash and debris 12 miles into the sky.
Thursday night's eruption of the volcano, located 50 miles southwest of the country's second-largest city of Surabaya, could be heard up to 125 miles away, Indonesia's disaster agency says, according to The Associated Press.
Termites can build huge, elaborate mounds that rise up from the ground like insect skyscrapers; scientists have now created little robots that act like termites to build a made-to-order structure.
"Termites are the real masters of construction in the insect world," says Justin Werfel of the Wyss Institute for Biologically Inspired Engineering at Harvard University. "The largest termite mound on record was 42 feet tall."
The mysterious Clovis culture, which appeared in North America about 13,000 years ago, appears to be the forerunner of Native Americans throughout the Americas, according to a study in Nature. Scientists have read the genetic sequence of a baby from a Clovis burial site in Montana to help fill out the story of the earliest Americans.
There's new evidence out today that's raising questions about whether women in their 40's and 50's should routinely undergo mammography to detect breast cancer. A new analysis of a big Canadian study found no evidence that regular mammograms save lives. The study even suggests that for many women, regular breast X-rays may do more harm than good.
NPR's Rob Stein joins us now to talk about this report. It appears in the British medical journal BMJ.