Humans
Some identical twins don’t have the exact same DNA
Identical twins may not be exactly identical. Mutations may arise early in development that account for tiny genetic differences between siblings.
Humans
More Stories in Humans
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Health & MedicineWhat kids need to know about getting a COVID-19 shot
COVID-19 vaccines are already being administered to some adults. Here’s what that means for kids and teens.
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Health & MedicineEarly details emerge about the new U.K. coronavirus variant
The variant may spread more easily from person to person. That could make continuing to wear masks all the more important, experts say.
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Health & MedicineStrongest bones come from Goldilocks recipe of exercise and rest
Building strong bones for life depends on adolescents staying active and getting enough sleep. Sometimes a lot of sleep, like 11 hours!
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PsychologyCan’t remember? Maybe you multitask too much between screens
Splitting your attention between devices can make it hard to create new memories, even when you’re not multitasking.
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Health & MedicineSocial distancing for teens shouldn’t mean giving up your social life
During even partial lockdowns, keeping connected with friends makes all the difference. That’s what athletes and other teen groups are finding.
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Science & SocietySuffering from racist acts can prompt Black teens to constructive action
Stress from experiencing racist acts can lead Black teens to recognize and confront racism and fight for social justice.
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ArchaeologyThis prehistoric woman from Peru hunted big game
Women in the Americas speared large prey as early as 9,000 years ago, new archaeological evidence suggests.
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Health & MedicineScientists Say: Apoptosis
When it’s time for cells to die, they need to do it carefully, so they don’t harm other cells.
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Health & MedicineThird major vaccine shows great promise against COVID-19
This vaccine, which may be easier to get to the public, appears to be 90 percent effective at halting disease and maybe spread of the new coronavirus.