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3,582 results for: assessments
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Health & MedicineAstraZeneca’s COVID-19 vaccine is tied to uncommon blood clots in rare cases
Blood clots should be listed as a possible side effect of AstraZeneca’s vaccine, but its benefits still outweigh the risks, experts say.
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Science & SocietyHow to detect, resist and counter the flood of fake news
Misinformation about health is drowning out the facts and putting us at risk. Researchers are learning why bad information spreads and how to protect yourself.
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Science & SocietyParents in Western countries report the highest levels of burnout
The first survey comparing parental exhaustion across 42 countries links it to a culture of self-reliance.
By Sujata Gupta -
ArchaeologyTo find answers about the 1921 race massacre, Tulsa digs up its painful past
A century ago, hundreds of people died in a horrific eruption of racial violence in Tulsa. A team of researchers may have found a mass grave from the event.
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Health & MedicineSome COVID-19 survivors face another foe: PTSD
The rate of post-traumatic stress disorder among survivors of severe COVID-19 is comparable to the rate among survivors of some natural disasters.
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PaleontologyThe dinosaur-killing asteroid impact radically altered Earth’s tropical forests
The asteroid impact fundamentally reset the nature of Earth’s tropical rainforests, decreasing diversity at first and making them permanently darker.
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Health & MedicineAstraZeneca’s COVID-19 vaccine isn’t tied to blood clots, experts say
Multiple countries suspended use of AstraZeneca’s COVID-19 vaccine because of concerns about blood clots, but health authorities say the shot is safe.
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AnimalsA year after Australia’s wildfires, extinction threatens hundreds of species
As experts piece together a fuller picture of the scale of damage to wildlife, more than 500 species may need to be listed as endangered.
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Health & MedicineCOVID-19 vaccines may be ready for teens this summer
Vaccinating children against COVID-19 is a crucial step towards reaching herd immunity and returning to pre-pandemic life.
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LifeTwo new books investigate why it’s so hard to define life
For centuries, scientists have struggled to define what it means to be alive. ‘What Is Life?’ and ‘Life’s Edge’ explore the question.
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AnthropologyArdi may have been more chimplike than initially thought — or not
A contested study of hand and foot fossils suggests this 4.4-million-year-old hominid was a tree climber and branch swinger.
By Bruce Bower -
AstronomySigns of a hidden Planet Nine in the solar system may not hold up
Hints of a remote planet relied on clumped up orbits of bodies beyond Neptune. A new study suggests that clumping is an illusion.