Genetics

Urban evolution: How species adapt to survive in cities

Plants and animals are evolving in cities around the world — offering ways to study longstanding scientific questions and clues to where climate change is taking us

How plants turned predator

Carnivorous plants fascinate as much now as when their gruesome diet was first discovered. Molecular biology is helping botanists trace the origins of their predatory ways.

Structural biology: How proteins got their close-up

PODCAST: The journey to solving the structures of these critically important molecules began with a chance discovery. Today, after decades of painstaking lab work and huge technological leaps, the field of protein science is exploding. (Season 2/Episode 3)

Learning about birds from their genomes

Suddenly, biologists have hundreds of complete genome sequences of our feathered friends. That wealth of data is revolutionizing understanding of bird biology and evolution.

Scientists can’t agree about Chernobyl’s impact on wildlife

Is Chernobyl a radioactive wasteland reeling from chronic radiation, or a post-nuclear paradise with thriving populations of animals and other life forms? Studies don’t always agree about levels of mutations and other ill effects.

The curious case of the shrinking genome

Scientists are exploring why some creatures throw away bits of their DNA during development

Genetic tricks of the longest-lived animals

Some species live unexpectedly long lives. By studying how they do it, researchers hope to pinpoint factors affecting human longevity.

The weird biology of asexual lizards

Some lizard species do without males altogether. Scientists are studying these all-female species to see what they might reveal about the pros and cons of sex.

Coronavirus evolving: How mutations arise and new variants emerge

COMIC: As it spreads throughout the world, the virus that causes Covid-19 has been changing. Scientists are tracking those changes, hoping to stay one step ahead of worrisome strains.

It’s not just the germs — it’s also the genes

Pathogens can make us sick. Just how sick depends on genetic variations, including ones that sabotage immune molecules called interferons. A better understanding could lead to new treatments for Covid-19 and other scourges.

Solo stars among the genes

From maggots’ movements to voles’ roles, sometimes single genes can have outsize effects on behavior

Matching meals to metabolism

Genes, microbes and other factors govern how each person’s body processes nutrients. Understanding the connections could help optimize diets — and health.

Pandemics in recent history

How viruses evolve: Lessons for the pandemic

Pathogens that switch to a new host species have some adapting to do. How does that affect the course of a pandemic like Covid-19?

From tiger scat to DNA to — hopefully — survival

Researchers dig out the elusive cats’ genetic material where they can, to guide efforts at conservation and diversity

A world in a bottle of water

Revolutionary techniques using traces of environmental DNA are analyzing entire ecosystems “from microbes to whales”

What does it look like to “turn on” a gene?

Only recently have scientists directly witnessed this most pivotal of events in biology, thanks to new technology that allows them to observe the process in living cells. It’s teaching them a lot.

Unraveling breast cancer risk

Only about 10 percent of people with breast cancer have links to known gene variants, but another 20 percent have significant family history. Scientists are delving deeper into the genome to find what remains unexplained.

What makes a tree a tree?

Despite numerous studies and 30-plus genomes under their belts, scientists are still struggling to nail down the defining traits of these tall, long-lived, woody plants