Mariana Lenharo is a life sciences reporter at Nature. Follow Lenharo on Twitter @marilenharo
Scientists know how to phase out fossil fuels. Some countries are listening
Representatives of more than 50 nations gathered in Santa Marta, Colombia, this week at what was billed as the first global summit on phasing out fossil fuels. A panel of scientists will be advising them
‘Super agers’ with great memory have more young brain cells
Older people with exceptional memory have a surprisingly high number of young neurons, a study finds
The Science That Could Change How You Think about Protein
Fitness influencers promote superhigh-protein diets, but studies show there’s only so much the body can use
Glowing Sperm Reveals How Female Mosquitos Control Sex
Female Aedes mosquitoes signal that copulation can proceed by subtly extending their genitalia
How the World’s Oldest Woman Lived to 117
Maria Branyas Morera was the oldest person in the world when she died. Scientists analysed her genes, metabolism, and more
CDC Panel to Review Childhood Vaccines: What's at Stake
What to know about the three shots under scrutiny by RFK Jr’s advisers and the data behind them
Heat and Rain Can Help Predict When Dengue Will Surge
A new analysis uncovers seasonal patterns of dengue, a mosquito-borne disease, across the Americas, which could help scientists anticipate future outbreaks
How to Detect Consciousness in People, Animals and Maybe Even AI
Insights from human brains could inform how scientists search for awareness in all its possible forms
How the Brain Summons Deep Sleep to Speed Healing
A heart attack unleashes immune cells that stimulate neurons in the brain, leading to restorative slumber
Obesity-Drug Pioneers Win Prestigious Lasker Award for Medical Science
Three scientists are honored for developing a class of blockbuster weight-loss drugs. Is a Nobel prize on the way?
'Sloth Fever' Virus Is Spreading. Here’s What You Need to Know about Oropouche
The Oropouche virus, which causes a disease nicknamed “sloth fever” for one of the animals that can be infected, has seen its first cases in the U.S.
What a Kamala Harris Presidency Would Mean for Science
As the daughter of a cancer researcher, Kamala Harris would bring a lifelong familiarity with science to the presidency, experts say
Tracking Ozempic’s Nausea Side Effect to Specific Neurons May Lead to Better Drugs
The neurons that produce a sick feeling and food aversion are distinct from those that induce a feeling of fullness
Do Insects Have an Inner Life? Animal Consciousness Needs a Rethink
A declaration signed by dozens of scientists says there is “a realistic possibility” for elements of consciousness in reptiles, insects and mollusks
IVF Treatment in the U.S. May Be at Risk, Scientists Warn
An Alabama court ruling that human embryos outside the uterus should be regarded as children has raised concerns among doctors and scientists about the future of the fertility treatment in vitro fertilization
Popular Weight-Loss Drugs Come with Side Effects
Recent studies evaluate risks associated with drugs such as Wegovy and Mounjaro
New Pill Helps COVID Smell and Taste Loss Fade Quickly
The antiviral drug ensitrelvir, which has not been approved outside of Japan, shortens sensory problems
Your Brain Finds It Easy to Size Up Four Objects But Not Five—Here’s Why
Neuron activity shows that the brain uses different systems for counting up to four, and for five or more
Prominent Consciousness Theory Is Slammed as Bogus Science
Researchers publicly call out theory that they say is not well supported by science, but that gets undue attention
If AI Becomes Conscious, Here’s How We Can Tell
A checklist derived from six neuroscience-based theories of consciousness could help assess whether an artificial intelligence system achieves this state
Weight-Loss Drug Also Protects against Heart Disease. What Happens Next?
Clinical-trial data suggest that semaglutide, sold under the name Wegovy, slashed risk of heart attacks and other cardiovascular incidents in a trial
FDA Approves the First Birth-Control Pill for Over-the-Counter Access
The U.S. Food and Drug Administration has approved the use of the oral contraceptive Opill without a prescription, increasing access to birth control at drug stores and online retailers
World COVID Emergency Status Is Over, but Dangerous Threat Remains
The World Health Organization has declared that COVID is no longer a “public health emergency of international concern” but cautions that it is still an ongoing health issue
Scientists Look for Toxins from East Palestine Derailment in Ohio
East Palestine residents are looking to independent researchers to fill gaps left by authorities about the toxic chemicals that could be affecting people after a train derailment