Biology

5 Animals That Mate Themselves to Death

There's a reason that spiders, eels, and some mammals practice suicidal reproduction.<p>Finding a mate can be exhausting—so much that some animals die after finally meeting that special someone.<p>For Weird Animal Question of the Week, we took a closer look at the reproductive strategy called …

Nature

20 years after Dolly

Everything you always wanted to know about the Dolly the cloned sheep and what came next, from a biomedical researcher and cloning expert.<p>It’s been …

Genetics

Humans Are Driving a New Burst of Evolution - Including Possibly Our Own

We're changing ourselves.<p>The unprecedented impact that humans are having on the planet is well known to us all. Scarcely a day passes by without a …

Life Sciences

How Good Gut Bacteria Could Transform Your Health (Page 1)

Barefoot and coated in fine desert dust, Jeff Leach hops around the fire, adjusting logs. Its roaring glow provides the only light as the sun sinks …

Life Sciences

A Scientist Explains: What Is NX Nerve Agent and How Does It Work?

The chemical that might have killed Kim Jong-nam.<p>The substance that could be responsible for the death Kim Jong-nam, the half-brother of the North …

Life Sciences

20 years after Dolly the sheep, what have we learned about cloning?

Wednesday marked the 20th anniversary of the announcement of Dolly the sheep, the first mammal cloned from an adult cell. Her creation left a lasting impact on both the public and the field of developmental biology, experts say.<p>At the time, other researchers had managed to clone mammals by …

Genetics

5 Coolest Things On Earth This Week

Subscribe to our newsletter<p>Scientists built an AI that learned to how to code, found chemicals in a giant lizard’s blood that killed deadly bacteria, …

Artificial Intelligence

You may soon be able to shell out for snail-based pain medicine

Why it matters to you<p>Snail venom could be the key ingredient in a new type of long-acting pain medication that's free of addictive opioids.<p>When it …

Life Sciences

Everyone Might Be A Loser In The Gene Editing Patent Fight

DNA editor CRISPR has shown seemingly endless promise. Will companies block its use for good?<p>A bruising battle over rights to a landmark gene editing technology threatens to block its benefits, such as new vaccines or killing pests that carry disease, when they won’t lead to profits.<p>The “CRISPR” …

Genetics

Neural Cells Don't Always Express Mom and Dad's Genes Equally

We’re all the product of genes from both parents. But in the brain, neurons may favor genes from mom or dad far more than previously thought, which …

Genetics

Scientists Have Discovered Four New (Very Tiny) Night Frogs

Biologists in India have spotted seven new species of night frogs, four of which are so tiny they could lounge comfortably on a human fingernail. The …

Frogs

Wacky Lactation in Nature: Underwater, Nipple-less, And Other Milky Oddities - GeekMom

Having breastfed both of my children for a whole year each, I had a lot of time to ponder this evolutionary trait we share with our mammal cousins. …

Milk

A Little-Known CRISPR Technique Could Be the Key to Fighting Deadly Superbugs

When folks talk about the gene-editing tool CRISPR, they’re usually talking about CRISPR-Cas9, a combination of DNA and enzymes that together act …

Genetics

Tiny Nanoscale Tubes Developed To Sample Cell Contents

A current method to examine a cell’s contents involves breaking the cell membrane and seeing what spills out, a process called lysing. It’s a crude …

Life Sciences

Mechanisms for initiating cellular DNA replication

Accurate duplication and transmission of genetic information to the next generation requires complex molecular assemblies. Bleichert <i>et al.</i> review …

Life Sciences

New structural studies reveal workings of a molecular pump that ejects cancer drugs

Sometimes cells resist medication by spitting it back out. Cancer cells, in particular, have a reputation for defiantly expelling the chemotherapy …

Chemistry

New tool to map RNA-DNA interactions could help researchers translate gene sequences into functions

Bioengineers at the University of California San Diego have developed a new tool to identify interactions between RNA and DNA molecules. The tool, …

Genetics

The Neanderthal In You May Be Controlling Your Gene Expression

A girl looks through the replica of a neanderthal skull displayed in the new Neanderthal Museum in the northern town of Krapina, Croatia, Feb. 25, …

Genetics

Sugar's 'tipping point' link to Alzheimer's disease revealed

For the first time a “tipping point” molecular link between the blood sugar glucose and Alzheimer’s disease has been established by scientists, who …

Dementia

CRISPR

It's been almost two years since we learned about CRISPR, a ninja-assassin-meets-DNA-editing-tool that has been billed as one of the most powerful, …

Genetics

Harvard researchers say they can bring the Woolly Mammoth back from extinction

A team of researchers claim that, with help from gene editing methods like CRISPR, they could conceivably be capable of cloning a Woolly Mammoth back from extinction in two years or less. While optimistic, there is a great deal that goes into the process, and it could be more than just two</b> …

Woolly Mammoths

Five Cutting-Edge Cancer Treatments

SPONSORED<p>Sponsored content independent of Scientific American's board of editors.<p>Advances in precision medicine, immunology, and epigenetics are …

Cancer

New risk factors for anxiety disorders

Mental, social and inherited factors all play a role in anxiety disorders. In the journal "<i>Molecular Psychiatry</i>", a research team from …

Genetics

Scientists found a way to make lotions out of your skin’s good bacteria to help fight its bad bacteria

Our largest organ—our skin—is crawling with bacteria, as well as fungi, viruses, and even tiny mites. For the most part, this is a good thing: Benign skin-dwelling microorganisms outcompete potentially harmful ones for food (read: oil from our pores and dead skin cells), some of them also produce …

Life Sciences

Tiny mutation makes plants less resistant to stressful conditions

Scientists from The University of Western Australia have identified a tiny mutation in plants that can influence how well a plant recovers from …

Life Sciences

Iowa State spinoff sees small towns using algae to clean water

Two Iowa State University scientists believe algae can help cut costs for hundreds of small Iowa towns that face up to $1 billion to upgrade their …

Algae

20 years after Dolly the sheep, potential of cloning remains unclear

<b>(CNN) —</b> On February 22, 1997, the world learned about a secret project that scientists at the Roslin Institute in Scotland had been working on.<p>More than seven months earlier, on July 5, 1996, they had aided a Scottish Blackface sheep in giving birth to a Finn Dorset lamb codenamed 6LL3.<p>She was the …

Genetics

The Blood of Komodo Dragons Could Help Us to Slay Antibiotic Resistance

The hidden power of dragons' blood.<p>Protein fragments in the blood of Komodo dragons have antimicrobial properties that help them resist toxic …

Life Sciences

How come we have a mind? And how can we even ask or answer this question?

<i>Nick Romeo is a critic and journalist whose work has appeared in the New Yorker, the New Republic, and other publications.</i><p>One of the least modestly titled works in the history of philosophy is René Descartes’s “The World.” Seeking to explain everything from planetary orbits to the properties of …

Opinion

Biologists propose to sequence the DNA of all life on Earth

<b>WASHINGTON, D.C.—</b>When it comes to genome sequencing, visionaries like to throw around big numbers: There’s the UK Biobank, for example, which …

Genetics