Researchers are redefining the nutritional value of prey. Studying the dynamics of sea lion predators and their prey, the researchers found that not all prey are the same — even those of similar size and weight of the same species — offering new perspectives for understanding ocean food resources.

In a surprising twist to one of biology’s most fundamental processes, a new study published on October 17, 2025, in the open-access journal Carbon Research has revealed that plant roots can actively absorb CO₂ from the soil—and this hidden process is powerfully influenced by light, fertilizer, and atmospheric conditions.

New research from the Champalimaud Foundation (CF) reveals how missing just one essential amino acid can change gene expression and the brain’s sensory systems, prompting animals to seek out protein-rich yeast and gut bacteria that help them restore nutritional balance and survive in times of need.

In the summer of 1812, French emperor Napoleon Bonaparte led about half a million soldiers to invade the Russian Empire. But by December, only a fraction of the army remained alive. Historical records suggest that starvation, cold, and typhus led to their demise. In a new study publishing October 24 in the Cell Press journal Current Biology, a team of microbial paleogenomicists extracted DNA from the soldiers’ teeth and found no trace of typhus. Instead, they identified two pathogens known to cause enteric fever and relapsing fever—ailments which likely contributed to the army’s downfall. 

Scientists have known hormone-sensitive lipase (HSL) as the enzyme that releases energy stored in our fat. Yet patients born without this protein do not become obese : on the contrary, they lose their adipose tissue, developing lipodystrophy with severe metabolic complications. A team from the Institute of Metabolic and Cardiovascular Diseases (I2MC, Inserm/Université de Toulouse) has just solved this puzzle by discovering that HSL plays a second, unsuspected role in the nucleus of fat cells, published online in Cell Metabolism on October 23.