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
Baby pterosaurs may have been able to fly right after hatching
A bone crucial for lift-off was stronger in hatchling pterosaurs than in adults. The baby reptiles also had shorter, broader wings than grown-ups.
- Animals
Tiny animals survive 24,000 years in suspended animation
Tiny bdelloid rotifers awake from a 24,000-year slumber when freed from the Arctic permafrost.
- Animals
Science and Indigenous history team up to help spirit bears
When scientists and Indigenous people work together, their efforts can benefit bears and people.
- Health & Medicine
Bringing COVID-19 vaccines to much of world is hard
The price of not vaccinating nearly everyone across the world could be a longer pandemic and more troubling variants of the new coronavirus.
- Humans
By not including everyone, genome science has blind spots
Little diversity in genetic databases makes precision medicine hard for many. One historian proposes a solution, but some scientists doubt it’ll work.
- Animals
Unique dialects help naked mole-rats tell friends from foes
Computer analysis reveals that these social rodents communicate with speech patterns distinct to each colony.
- Health & Medicine
Early details emerge about the new U.K. coronavirus variant
The variant may spread more easily from person to person. That could make continuing to wear masks all the more important, experts say.
- Genetics
Scientists Say: Evolution
Evolution is how species change over time. Individuals in the group vary, and some will pass on their genes. Over time, the whole species changes.
- Space
Surviving Mars missions will take planning and lots of innovation
Astronauts that go to Mars will need protection from microgravity and radiation, plus mini-medical devices to diagnose problems and manage emergencies.
- Health & Medicine
Trio wins 2020 Nobel for discovery of hepatitis C
It took 50 years from discovery of hepatitis C to its cure. For their pivotal work in this area, three men will take home a 2020 Nobel Prize.
- Life
Let’s learn about alligators and crocodiles
Alligators and crocodiles seem similar — but they live in different places and look different, too.
- Animals
A single chemical may draw lonely locusts into a hungry swarm
Swarms of locusts can destroy crops. Scientists have discovered a chemical that might make locusts come together in huge hungry swarms.
