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Does smoking pot lower your IQ? New study challenges current thinking

As access to marijuana increases—and while acceptance of the drug grows and perception of its harmfulness diminishes—it is important to ...
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‘It changed the world’: Exploring 60 years with the birth control pill

Loretta Ross, an activist and visiting women's studies professor at Smith College, was among the first generation of young women ...
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A right to know? Should children be told when a parent’s genetic test reveals hereditary risks?

What are the legal, professional and ethical, duties or responsibilities of researchers and clinicians in handling genetic testing and the ...
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Invading armies not to blame for fall of ancient Andean cultures, genetic analysis shows

An international team has conducted what it says is the first in-depth, wide-scale study of the genomic history of ancient ...
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‘Psychobiotics’: Can we control the way we think by altering gut bacteria?

The allure is simple: Drug development for neuropsychiatric disorders has lagged for decades, and many existing drugs don’t work for ...
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Is IVF an essential medical procedure during a pandemic?

The pandemic confronts patients and health-care providers with new ethical dilemmas. Is it too risky to pursue a fertility procedure ...
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Why were these 1,000-year-old skulls shaped like ‘sci-fi aliens’?

Tight wrapping in childhood produced deliberately deformed skulls ...
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‘Skin hunger’: That burning desire for human contact supercharged by the coronavirus pandemic

Once a week, Alice, who lives alone, walks to the end of her garden to meet her best friend Lucy ...
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Capturing ‘nuance’: Studying single cells—rather than millions—is changing our understanding of biology

There are roughly 37 trillion cells in the human body, and each keeps us alive in some small way. There ...
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Skeletons of Africans enslaved in Mexico reveal extreme hardships of the Atlantic slave trade

In a study published [April 30] in the journal Current Biology, scientists tell the stories of three 16th-century enslaved Africans ...
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‘A radical idea’: Could a single factor be responsible for all mental illnesses?

What are the roots of mental illness? In the hope of finding an answer, scientists have piled up an enormous ...
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Dinosaur DNA discovered?

The tiny fossil is unassuming, as dinosaur remains go. ... But it may contain something never before seen from the ...
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A different approach to finding alien life: What if ET breathes hydrogen instead of oxygen?

The first time we find evidence of life on a planet orbiting another star (an exoplanet), it is probably going ...
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Menopause might be a tipping point for Alzheimer’s for millions of women

Estrogen is the master regulator of metabolism in the youthful female brain, orchestrating everything from glucose transport and uptake to ...
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‘Enormous potential’: Recently discovered microbe could protect mosquitoes from malaria

Scientists have discovered a microbe that completely protects mosquitoes from being infected with malaria. The team in Kenya and the ...
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Overcoming fear: Understanding DNA ‘flexibility’ could lead to better treatments for phobias and PTSD

Fear is an important survival mechanism and so too is the ability to inhibit fear when it’s no longer needed ...
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Diagnosing Alzheimer’s with artificial intelligence and brain scans

In recent years, scientists and clinicians have focused their attention toward machine-learning artificial intelligence (AI) tools to help them diagnose ...
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‘Crazy beast’ fossil shows how weird evolution can get

Researchers have uncovered the fossil of an early mammal named the "crazy beast" that lived 66 million years ago on ...
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‘Female genetic superiority’? How two X chromosomes give women an edge against coronavirus

It was noticeable from the initial outbreak in Wuhan that Covid-19 was killing more men than women. By February, data ...
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EPA approves GM mosquito trial in Florida Keys to combat zika virus and dengue fever

A plan to test genetically modified mosquitoes in the Florida Keys has received approval from the federal government. For more ...
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Twins study bolsters theory that genetics play a role in coronavirus symptom severity

Symptoms of Covid-19 appear to be partly down to genetic makeup, researchers at King’s College London have discovered. The finding ...
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‘Profound consequences’: Autistic people unable to tune out distractions, study suggests

Autistic people have atypical activity in a part of the brain that regulates attention, according to a new study. The ...
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Can we boost human memory by tweaking the microbiome?

A new study is among the first to trace the molecular connections between genetics, the gut microbiome and memory in ...
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‘The fittest among us?’: Why are preteens at lowest risk from coronavirus?

Although the estimation of mortality and morbidity rates caused by pandemics is fraught with difficulty, a trend seems to emerge ...
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Why girls with ADHD aren’t being diagnosed

Anxiety. Depression. School failure. Self-harm. Unemployment. Unplanned pregnancies. Even an increased risk of early death. The risks and toll of ...
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Experimental cancer blood test shows promise, but also hits some snags

A blood test has detected cancer in individuals who had no history or symptoms of cancer. A trial of the ...
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‘Cartoonishly oversimplistic’: Researchers rethinking amyloid hypothesis for Alzheimer’s

[Experts are] divided about whether treating amyloid buildup—long thought to be the best target for an Alzheimer's therapy—is still a ...
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Is this brain-controlled prosthetic arm—with the sensation of touch—the future of prosthetics?

[T]hree years ago, [electrician Rickard] Normark received a new kind of brain-controlled prosthetic that was surgically attached to the bone, ...