Category: Science

Hidden river once flowed beneath Antarctic ice 0

Hidden river once flowed beneath Antarctic ice

Using the most precise seafloor maps ever created of Antarctica’s Ross Sea, researchers have discovered a long-dead river system that once flowed beneath Antarctica’s ice and influenced how ice streams melted after Earth’s last ice age. …read more

How plants turn off genes they don’t need 0

How plants turn off genes they don’t need

New research has identified small sequences in plant DNA that act as signposts for shutting off gene activity, directing the placement of proteins that silence gene expression. …read more

Postnatal identification of Zika virus peptides from saliva 0

Postnatal identification of Zika virus peptides from saliva

For the first time, researchers are using proteomics to examine proteins and peptides in saliva in order to accurately detect exposure to Zika virus. With 70 countries and territories reporting evidence of mosquito-borne Zika virus transmission, there is an increased need for a rapid and effective test for the virus. This study offers a new, quicker and more cost-effective way to test for the virus. …read more

Materials scientists probe a protein’s role in speeding Ebola’s spread 0

Materials scientists probe a protein’s role in speeding Ebola’s spread

Scientists have pinpointed how a tiny protein seems to make the deadly Ebola virus particularly contagious. …read more

Analysis of a ‘rusty’ lunar rock suggests the moon’s interior is dry 0

Analysis of a ‘rusty’ lunar rock suggests the moon’s interior is dry

The moon is likely very dry in its interior according to a new study analyzing fragments of the ‘Rusty Rock,’ a rock collected from the moon’s surface during the Apollo 16 mission in 1972. …read more

Dino-killing asteroid could have thrust Earth into two years of darkness 0

Dino-killing asteroid could have thrust Earth into two years of darkness

Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new research finds. This would have shut down photosynthesis, drastically cooled the planet, and contributed to the mass extinction that marked the end of the age of dinosaurs. …read more

Chemicals from gut bacteria maintain vitality in aging animals 0

Chemicals from gut bacteria maintain vitality in aging animals

A class of chemicals made by intestinal bacteria, known as indoles, help worms, flies and mice maintain mobility and resilience for more of their lifespans, scientists have discovered. …read more

Cholesterol-lowering drugs may fight infectious disease 0

Cholesterol-lowering drugs may fight infectious disease

Scientists found a gene variant that affects cholesterol levels also could increase the risk of contracting typhoid fever. A common cholesterol-lowering drug could protect animal models against Salmonella Typhi, the culprit behind the potentially deadly infection. The findings give insight into the mechanisms that govern human susceptibility to infectious disease and point to possible avenues to protect against pathogens — like Salmonella or Ebola — whose entry into host cells is regulated by cholesterol. …read more

Mechanism that impairs production of bovine embryos is revealed 0

Mechanism that impairs production of bovine embryos is revealed

A longstanding obstacle to the market for bovine embryos is about to be removed. Researchers have described a hitherto unknown mechanism of lipid accumulation in oocytes that limits the success of in vitro production of bovine embryos. …read more