Cambridge researchers have successfully printed out retinal ganglion cells, which transmit information from the eye to the brain, and glial cells, which support and protect neurons. Those cells, which came from the retinas of adult rat cells, retained their ability to survive and grow in culture.
Researchers have found the earliest example of a bone which is key to the way the human hand functions. The a 1.4 million-year-old bone gives humans the ability to make and use tools, and millions of years ago it gave human ancestors the same ability. The bone, the third metacarpal, was discovered in West Turkana, Kenya.
A "spermbot" created by German scientists could one day be used to fertilize human eggs and to deliver medicine to targeted parts of the body. In a study using bull sperm, scientists were able to trap a sperm in a metal nanotube, which could then be guided to a desired location. A paper on the spermbot appears in the journal Advanced Materials.
The first animal was the comb jelly, according to a new study that displaces the sponge at the base of animal evolution. Sponges have long been thought to be the first animals. Comb jellies are more evolved than sponges, making it counterintuitive that they would have evolved from sponges--and calling into question much of what we know about evolution.
Sometimes science hits us, turns us back into little kids, sitting in class, listening to the teacher tell us about why volcanos spit lava and the moon changes shape. That's kind of what the photos are for.
Genetic testing company 23andMe has stopped selling its saliva-based DNA kits, halted its interpretation of health data to comply with a directive from the FDA, and faces a $5 million class-action lawsuit.
Researchers led by MIT's Stefanie Shattuck-Hufnagel have come up with one of the world's hardest tongue twisters, "pad kid poured curd pulled cod." Verbal slip-ups that occur due to tongue twisters can give researchers insight into the brain's speech-planning processes.
Valley girl speech, AKA uptalk, is marked by a rise in pitch at the ends of sentences, and is usually connected to teenage girls. But now linguists are arguing that uptalk is infectious, and is expanding to other demographic groups, including males.