Frontiers | Science news

Image: Neurons, glia, and vasculature used in the researcher's simulations. Shichkova et al.

Neuroscience

Published on 25 Mar 2025

Most in-depth simulation of brain metabolism yet reveals new targets for future dementia treatments

A new model of brain metabolism – the most complex ever generated –shows how altering key chemicals could restore aged cells to their youthful activity and resilience.

A great hammerhead shark beneath the water, surrounded by smaller fish. Image by Annie Guttridge.

Home sweet home: some great hammerhead sharks stick to the perfect neighborhood in the Bahamas instead of migrating

Scientists tracking endangered great hammerhead sharks show that Andros Island, in the Bahamas, is a year-round refuge for some individuals that choose not to migrate.

Adélie penguins (Pygoscelis adeliae). Image credit: cyfer13 / Wikimedia Commons

Mere whiff of penguin poo pushes krill to take frantic evasive action

Scientists have shown for the first time that Antarctic krill show a stereotypical reaction in the presence of guano from Adélie penguins: they swim faster and make more turns over greater angles. It is unknown to what kind of water-borne chemical cues they respond, but the authors speculate that this behavior might be a universal escape response to the excreta of predators, irrespective of species.

Lava flows down a hill under an evening sky.

New research reveals how a 252 million year old climate crisis accompanied the ‘Great Dying’ mass extinction event, completely reorganizing the Earth’s ecosystems

By comparing climate models to fossil vegetation, scientists trace the remains of climate chaos following the Permian-Triassic mass extinction — including 10 degrees of global warming caused by CO2 emissions.