A new study sounds a cautionary note for a controversial procedure used in creating “three-parent babies.” That procedure replaces defective mitochondria, the energy-generating organelles in cells, with healthy ones. But even a tiny amount of defective mitochondria may replicate and take over the cell, researchers report online May 19 in Cell Stem Cell. Exactly which […]
A “dirty blizzard” bombarded the Gulf of Mexico seafloor with pollution from the 2010 Deepwater Horizon oil spill for months after workers sealed the leak, new research shows. Marine snow, an organic material that floats down from the ocean’s upper layers, carried the pollution to the seafloor, researchers report the week of May 30 in […]
There are some pets that you just don’t pet. But that didn’t stop Philip Stoddard, a zoologist at Florida International University in Miami, from petting his pet electric eel Sparky. “It was so beautiful, I had to pet it,” he told Science News for Students. That was a big mistake, writes Roberta Kwok, because Sparky […]
Ancient stargazers chose well when they named the solar system’s largest planet, Jupiter, after the king of the Roman gods. With more than twice the mass of all the other planets combined, Jupiter reigns supreme. It’s the most influential member of our planetary family — after the sun. Jupiter might have hurled the asteroids that […]
AUSTIN, TEXAS — Cities have become great unintentional experiments in evolution. Urban life can alter the basic biological traits of its plant and animal residents, down to the taste of leaves or the stickiness of toes, researchers reported at the 2016 Evolution conference. For white clover (Trifolium repens), leaf taste matters as a defense against […]
ORLANDO, FLA. — What some people view as a flaw in a new genetic-engineering tool might actually be a safety feature, a study suggests. CRISPR/Cas9 gene drives, as the new tools are called, are molecular cut-and-paste machines that can break regular rules of inheritance and get passed to more than 50 percent of offspring (SN: […]
On December 3, 2000, at Cape Shirreff, near the tip of the Antarctic Peninsula, a female Antarctic fur seal experienced a personal tragedy: She gave birth to a dead male pup. For the next day or so, the seal, numbered “12” by scientists watching her group, nuzzled her baby and vocalized to him. Nearby on […]
Ancient Chinese tales and writings about a massive flood of the Yellow River that led to civilization’s rise in East Asia appear to hold water, researchers say. A section of the Yellow River dammed by an earthquake-caused landslide broke open about 3,936 years ago, says a team led by geologist Qinglong Wu of China’s Nanjing […]
Instead of destroying its leafy hosts, one common plant virus takes a more backhanded approach to domination. It makes infected plants more attractive to pollinators, ensuring itself a continued supply of virus-susceptible plant hosts for generations to come. The strategy might be a way for the virus to discourage resistance from building up in the […]
The link between pollinator problems and neonicotinoids, a group of agricultural pesticides commonly associated with declines in honeybees, continues to build with two new studies published this week. Butterflies of Northern California join the ranks of honeybees, bumblebees, moths and other organisms that may be feeling the effects of the infamous insecticides. Butterfly species in […]