With egg freezing being touted as a way for women to potentially expand future childbearing options, the viability of those eggs when they're defrosted is still relatively unknown. The latest bit of guardedly good news is a short report in JAMA indicating that frozen eggs do indeed lead to live births after IVF nearly half the time — but that the odds of a live birth are almost 20 percent higher for IVF using fresh eggs.
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People seeking answers to science questions face a constant reality. Many science experiments come up with fascinating results. But the results cannot be replicated as often as you'd think. David Greene spoke with NPR's Shankar Vedantam.
With a rare mix of blazing speed, safety and energy efficiency, the new Tesla Model S P85D left the folks at Consumer Reports grasping for ways to properly rate the car, after it scored a 103 — out of 100. "It kind of broke the system," says Jake Fisher, director of the magazine's auto test division.
Picking a mate can be one of life's most important decisions. But sometimes people make a choice that seems to make no sense at all. And humans aren't the only ones — scientists have now seen apparently irrational romantic decisions in frogs.
Little tungara frogs live in Central America, and they're found everywhere from forests to ditches to parking lot puddles. These frogs are only about 2 centimeters long, but they are loud. The males make calls to woo the females.
Polio is almost gone from the face of the earth. The virus is actively circulating in only two countries, Afghanistan and Pakistan. But now there's a worrisome new development in the polio end-game.
In Thursday's edition of the journal PLoS Pathogens, scientists report on a man in the United Kingdom who was immunized with oral polio vaccine as a child and whose stool samples continued to contain live polio virus for 28 years.