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Evolution

Are you my baby? The clever ways that brood parasites trick other birds

Cuckoos, cowbirds and other species outsource their parental duties. Scientists are uncovering new twists in this sneaky — and often treacherous — game of survival.

We are family: Tracing the evolution of animals

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual past.

Targeting the racial disparity in kidney disease

Some people of West African descent face a higher risk of renal failure. New drugs based on gene research may help right the ship — if they can reach everyone who needs them.

Of genes, chromosomes and oratorios

Jenny Graves has spent her life mapping genes and comparing genomes. Now she’s created a musical opus about evolution of life on this planet — bringing the same drive and experimentalism she brought to the study of marsupial chromosomes.

It’s not just us: Other animals change their social habits in old age

In patterns that may sound familiar, long-term studies reveal what elderly deer, sheep and macaques are up to in their twilight years

One fish, two fish, 3,000 fish ...

Groups of cichlid fishes in East Africa radiated into thousands of species within dazzlingly short periods of time. How did they do it?

Abracadabra! How magic can help us understand animal minds

By performing tricks for birds, monkeys and other creatures, researchers hope to learn how they perceive and think about their world

Spots, stripes and more: Working out the logic of animal patterns

More than 70 years ago, mathematician Alan Turing proposed a mechanism that explained how patterns could emerge from bland uniformity. Scientists are still using his model — and adding new twists — to gain a deeper understanding of animal markings.

The wasps that tamed viruses

To protect and rear their young, some insects have transformed wild viruses into tiny biological weapons

The tender art of tadpole parenting

From poison frogs to worm-like caecilians, some amphibians are hardworking and surprisingly creative caregivers

They swim and they spin: Meet the aquatic spiders

Some make nests inside seashells, others tote bubbles of air on their backs. The spiders that went back to water evolved lots of slick survival strategies.

Hunting sky islands for genetic clues to climate resilience

OPINION: Isolated mountaintops are hotbeds of evolutionary adaptation and great places to study how climate change affects ecosystems

CRISPR gene editing: Moving closer to home

With the first medical therapy approved and systems like CRISPR-Cas showing up in complex cells, there’s a lot going on in the genome editing field. Here’s our primer.

Neanderthals: More knowable now than ever

They have held our fascination ever since we first identified their remains. Today, thanks to new artifacts and technologies, findings about our closest relatives are coming thick and fast.

Where the heck did all those structures inside complex cells come from?

Scientists agree that eons ago, a bacterium took up residence inside another cell and became its powerhouse, the mitochondrion. But there are competing theories about the birth of other organelles such as the nucleus and endoplasmic reticulum.

Division of labor in ants, wasps, bees — and us

Social insects and humans share the trait of divvying up tasks, as do some fish. Researchers find that it emerges naturally, and it often doesn’t take a boss to keep things in order.

Evolution of the nervous system

COMIC: When, why and how did neurons first evolve? Scientists are piecing together the ancient story.

The fossil that launched a dinosaur revolution

PODCAST: Archaeopteryx forever changed our understanding of dinosaurs and the origin of birds, but it took a century after its discovery and a one-page paper to shift scientific consensus (Season 3, Episode 2)

The ever-tenuous success of plants engineered to kill insect foes

Bt crops keep many agricultural pests at bay and have drastically reduced the use of pesticides. But scientists warn that these valuable tools are in jeopardy due to overuse and abuse.

Mysteries of the poisonous amphibians

Many brightly colored frogs and salamanders have enough toxins in their skin to kill multiple people. How do they survive their own noxious weapons?

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