Researchers developed a way to attach freeze-dried sperm to paper, allowing it to be transported easily and safely — even through the mail. Healthy mouse offspring have been produced from the freeze-dried sperm’s DNA.
A review of Curiosity rover data suggested that Gale Crater may be filled with wind-blown sediment, rather than lake sediment, as was previously believed. The finding could mean the area was less likely to host life than scientists thought.
The Intergovernmental Panel on Climate Change released a bombshell report concluding that human activity is responsible for hotter temperatures and extreme weather events. Slowing the trend is possible but requires decisive action.
JOSH EDELSON/AFP/Getty Images
Researchers discovered that wrinkles in venomous snakes’ teeth — which help attach teeth to the jaw — developed into venom grooves, giving snakes their distinctive, deadly fangs.
"It's always been a mystery why fangs have evolved so many times in snakes, but rarely in other reptiles. Our study answers this, showing how easy it is for normal snake teeth to turn into hypodermic needles."