Humans
We summarize the week's scientific breakthroughs every Thursday.
- Chemistry
Vaping the sweetener sucralose may produce toxic chemicals
Sucralose in e-liquids can break down, increasing toxic aldehydes in vapors and producing harmful organochlorines, including a potential carcinogen.
- Health & Medicine
Resurgence of measles is a tale as old as human history
Editor in Chief Nancy Shute discusses the recent global measles outbreak and the history of the spread of pathogens.
- Health & Medicine
One number can help explain why measles is so contagious
The basic reproduction number, or "R naught," of measles shows how contagious the disease is compared with other pathogens.
- Life
How bacteria nearly killed by antibiotics can recover — and gain resistance
A pump protein can keep bacteria alive long enough for the microbes to develop antibiotic resistance.
- Health & Medicine
Being bilingual is great. But it may not boost some brain functions
A large study of U.S. bilingual children didn’t turn up obvious benefits in abilities to ignore distractions or switch quickly between tasks.
- Health & Medicine
Faulty cellular antennae may cause a heart valve disorder
Mitral valve prolapse might be caused by dysfunctional primary cilia meant to signal cells during development.
- Health & Medicine
A cognitive neuroscientist warns that the U.S. justice system harms teen brains
The U.S. justice system holds adolescents to adult standards, and puts young people in situations that harm their development, a researcher argues.
- Science & Society
How the battle against measles varies around the world
Measles is a global health threat. Snapshots of several countries show how stopping its spread depends on local conditions and beliefs.
- Health & Medicine
Measles erases the immune system’s memory
The measles virus can usher in other infections for months, or even years.
- Health & Medicine
Finding common ground can reduce parents’ hesitation about vaccines
Physicians are examining whether discussing shared health goals can bring vaccine-hesitant parents on board.
- Animals
Bad moods could be contagious among ravens
Ravens may pick up and share their compatriots’ negativity, a study on the social intelligence of these animals suggests.
- Health & Medicine
How allergens in pollen help plants do more than make you sneeze
A plant’s view of what humans call allergens in pollen grains involves a lot of crucial biology. And sex.
