MS-LS4-4
Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals' probability of surviving and reproducing in a specific environment.
- Fossils
Ancient ‘ManBearPig’ mammal lived fast — and died young
Developing in the womb for a while — but being born ready to take on the world — may have helped post-dinosaur mammals rise to dominance.
- Animals
Butterfly ‘tails’ might be part of an escape tactic
Slender, tail-like extensions on their wings may help some butterflies survive attacks by hungry predators.
- Tech
Virtual critters evolve bodies that help them learn
A combination of evolution and learning may lead to more intelligent and agile robots.
- Fossils
Bright-colored feathers may have topped pterosaurs’ heads
Fossil remains of a flying reptile hint that their vibrant crests may have originated 250 million years ago in a common ancestor with dinosaurs.
- Humans
Scientists Say: Denisovan
The Denisovans were a recently discovered population of ancient hominids.
- Animals
Losing some genes may explain how vampire bats can live on blood
Loss of 13 genes active in other bats could support the vampires’ blood-eating strategies and adaptations.
- Animals
Surprise! Sixteen tiny wasp species found masquerading as one
Scientists used new and old tools to overturn 160-year-old ideas about this wasp. They show you can’t tell a wasp by its looks.
- Life
Explainer: What is an endangered species?
Threats such as climate change and habitat loss can put species at risk of going extinct. Different words describe that risk.
- Archaeology
Our species may have reached Europe while Neandertals were there
Archaeological finds from an ancient French rock-shelter show periodic settlements by both populations, just not at the same time.
- Life
Scientists Say: Adaptation
This word refers to a feature of a living thing that helps it better survive in its environment — or the process of that feature evolving in a population.
- Fossils
‘Penis worms’ could have been the original hermits
These soft-bodied critters lived in abandoned shells about 500 million years ago, a new study suggests.
- Animals
Will the woolly mammoth return?
Scientists are using genetic engineering and cloning to try to bring back extinct species or save endangered ones. Here’s how and why.
