Srini Srinivasan

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SpaceX releases first interior photos of its astronaut-carrying spacecraft

SpaceX's new Crew Dragon capsule may be reserved for astronauts traveling to and from the International Space Station — but now you can take a virtual tour of the vehicle's insides. The company just released interior photos of the spacecraft, as well as a video showing closeups of its control …

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The Human Brain Has An On-Off Switch For Consciousness, Scientists Say

Turning off the mind could be as easy as flicking a switch.<p>That's what doctors at George Washington University in Washington, D.C., inadvertently discovered while evaluating a 54-year-old woman with epilepsy. The researchers realized that by using electrodes to deliver tiny jolts of electricity to …

A single broken gene slashes your heart attack risk

Two new studies have identified mutations that could have a big impact on cardiovascular disease<p>When cholesterol accumulates inside blood vessels, they sometimes burst into clots that block the flow of blood to a person's brain. This is what we call a stroke. But even though doctors have understood …

Fasting is beneficial to the immune system: Study shows it triggers stem cell regeneration

Close<p>Fasting as little as eight days a year could help bodies become healthier, according to new research from the University of Southern …

Scientists Prime The Immune System As A Powerful Cancer Weapon

Watch out, cancer cells. Humanity is learning how to use our built-in weapon – our own white blood cells – to kill you.<p>Early results showing that genetically modified white blood cells, called T-cells, can make cancer cells disappear, at least temporarily, in 50% to 90% of patients with certain …

Bursts Of Light Create Memories, Then Take Them Away

You can't just open up a living brain and see the memories inside.<p>So Roberto Malinow, a brain scientist at the University of California, San Diego, has spent years trying to find other ways to understand how memories are made and lost. The research — right now being done in rats – should lead to a …

Skip the Humans: Drug Discovery by Simulating Cells

Virtual clinical trials would combine big data and computer simulation.<p>The future of medicine, we're often told, will be personalized. We'll have gene therapies, wearables to monitor our vital signs—maybe even new kinds of vital signs—and robot doctors to diagnose our illnesses.<p>But the real promise …

Brain Evolution Study Shows Humans Sacrificed Brawn For High Intelligence

Humans may be smart because energy once devoted to brawn was given up for brains, researchers say.<p>The most powerful computer known is the brain. The human brain possesses about 100 billion neurons with about 1 quadrillion — 1 million billion — connections known as synapses wiring these cells …

3D model of a nerve terminal in atomic detail

The electrochemical jelly inside your head contains something like one quadrillion synapses, the junctions at which nerve cells talk to one other by converting electrical signals into chemical ones and then back again. They have two components (sometimes three): the nerve terminal of one cell, …

Your Next Shot Might Be Inspired by a Spider

A study of prey-catching arachnids sheds new light on the biomechanics of venom-injection.<p>A spider fang is a small wonder of engineering. If you're a venom-injecting arachnid—the kind that actively kills live, struggling prey*—the things you use to inject that venom need to be, on the one hand, …

The Search for Genes That Prevent Disease

What can we learn from people with genetic predispositions to a disease who never end up getting sick?<p>The X-Men’s mutations gave them superpowers. Telepathy. Flight. Teleportation. Some scientists believe that there may be some among us who have a superpower in our genes, too—the ability, against …

The 'Miracle' Berry That Could Replace Sugar

Miracle fruit contains a protein called miraculin that tastes sweet enough to replicate the effect of sugar. Why isn't it widely used as a healthy sweetener?<p>Of all our senses, taste is the one that people associate most strongly with expectations of pleasure. But indulgence comes at a cost. Almost …

Scientists Urge Study of Environmental Factors That May Speed Aging

New paper urges more work on "gerontogens" in the environment.<p>Why do our bodies age at different rates? Why can some people run marathons at the age of 70, while others are forced to use a walker?<p>Genes are only part of the answer. A trio of scientists from the University of North Carolina argue in …