Astronomers finally solve the gamma-Cas X-ray mystery after 50 years

On a fateful day 210 million years ago, two crocodile cousins about the size of jackals stood side-by-side amid the low ferns of a humid riverbank that would one day become northern New Mexico. One of the crocs, Hesperosuchus agilis, had a long snout, large back legs, and smaller, thinner arms. A land dweller, Hesperosuchus was speedy and liked to hunt for food near rivers and streams.

As climate change accelerates and global temperatures continue to rise, a new randomized clinical trial provides compelling evidence that one of the most powerful climate solutions may be on our plates. A study published in Current Developments in Nutrition shows that adopting a low-fat vegan diet reduces diet-related greenhouse gas emissions by 55% and cumulative energy demand by 44%—dramatic reductions achieved in just 12 weeks.

Cornell researchers have discovered that a lethal variant of feline coronavirus, previously thought to be limited to a devastating 2023 outbreak in Cyprus that killed thousands of cats, has in fact appeared in the United States, raising concerns about future large-scale outbreaks in vulnerable cat populations.

Scientists at the Université de Montréal's affiliated Montreal Clinical Research Institute (IRCM) have identified a new family of natural molecules with strong antiviral activity, notably against the Ebola virus and SARS-CoV-2, the virus responsible for COVID-19. The discovery comes at a time of renewed fears of the rapid emergence of new pandemics, and highlights the ongoing search at the IRCM for novel antiviral agents derived from natural sources.