Pfizer requests FDA authorization for its COVID-19 vaccine in kids 12 to 15 By Rachael Rettner The company hopes to make the vaccine available to the age group before the start of the fall school year.
A woman's debilitating chronic itch disappeared after she started using marijuana By Nicoletta Lanese "These findings are promising, but randomized clinical trials are needed to confirm the results," her doctors said.
Quick guide: COVID-19 vaccines in use and how they work By Nicoletta Lanese Here's a guide to the vaccines being used in different countries.
People are taking an animal deworming drug for COVID-19, and it's a really bad idea By Rachael Rettner Misinformation about ivermectin has led some people to take the drug for COVID-19.
Cells age prematurely in those with depression, study suggests By Yasemin Saplakoglu People with major depression had accelerated cellular aging by an average of two years compared to healthy controls.
Rare autoimmune disorder caused a woman's nose to collapse By Nicoletta Lanese The bridge of the woman's nose collapsed and a hole formed in her septum.
AstraZeneca COVID-19 vaccine causes very rare blood clots, EU regulator says By Nicoletta Lanese Other COVID-19 vaccines have not been linked to such clotting disorders.
These viruses are the most likely to trigger the next pandemic, according to scientists By Rachael Rettner The tool essentially creates a "watch list" of newly discovered animal viruses that pose the greatest threat to human health.
Woman gives birth to twins conceived three weeks apart By Yasemin Saplakoglu A woman in England became pregnant while already pregnant.
Pfizer's COVID-19 vaccine effective after 6 months and works against problem variant By Nicoletta Lanese The developers gave an update from their ongoing clinical trial.
What causes COVID-19 vaccine side effects? By Jocelyn Solis-Moreira, MS Here's why the COVID-19 vaccine causes side effects, and why we shouldn't worry about them.
Chemical found in 1,000 processed foods may harm the immune system By Ashley P. Taylor The food preservative is found in Pop-Tarts, Cheez-Its and many other processed foods.
Spaceflight and long-distance swimming shrink the heart By Yasemin Saplakoglu Scientists analyzed the hearts of retired astronaut Scott Kelly after he spent time in space and elite endurance swimmer Benoît Lecomte after he swam the Pacific Ocean.
How stress stops hair growth (in mice) By Nicoletta Lanese More research is needed to know if the same mechanism halts hair growth in humans.
Pfizer vaccine is 100% effective in preventing COVID-19 in children ages 12 to 15 By Yasemin Saplakoglu Pfizer and BioNTech plan to submit the clinical trial data to the FDA as soon as possible.
Mysterious brain disease 'cluster' under investigation in Canada By Rachael Rettner The illness has afflicted more than 40 people in New Brunswick.
Pfizer and Moderna COVID-19 vaccines are 90% effective in 'real-world' study By Rachael Rettner Two doses of either vaccine were 90% effective at preventing infections, and a single dose was 80% effective.
Scientists built a perfectly self-replicating synthetic cell By Nicoletta Lanese Scientists created a new organism called JCVI-syn3A that contains fewer than 500 genes.
Does coffee really stunt kids' growth? By Benjamin Plackett It's probably fine to give your child weak coffee, as long as you skip the sugar.
What if humans didn't have an appendix? By Charles Q. Choi What might life be like then if everyone lacked an appendix? That organ may not be a useless artifact of evolution after all.
