A pair of fossils from a South African cave have scientists both excited and puzzled. Scientists say the fossils — an adult female and a juvenile — could be the long-sought transition between ape-like ancestors and the first humans.
The bones belong to creatures related to the famous Lucy fossil found in Ethiopia in the 1970s, but their owners lived more recently, just two million years ago.
Women who didn't get all three doses of HPV vaccine, as is recommended, were still protected against the virus that causes cervical cancer, a new study finds. If that result holds up, it could become easier and less expensive to protect women against this common form of cancer.
"In a win for the Obama administration, a federal appeals court in Virginia today tossed out two lawsuits challenging the constitutionality of the sweeping law overhauling the health care system," our colleague Scott Hensley writes over at the Shots blog.
The seemingly unbroken run of news this year about earthquakes, floods and wildfires will prompt lots of discussion about how and where houses get built, in hopes of making them safer.
But chances are that few regulatory changes will actually occur.
Rewriting the codes that regulate building practices is a long, drawn-out process that encounters push-back every step of the way from home builders and other property-rights advocates, because of their concern about the impact on the cost of construction.