Life
Looking for LUCA, everyone’s shared ancestor
You and all other living things descended from a single organism — our great-grand-germ. Scientists are studying modern genes to learn more about this very distant ancestor.
MS-LS4-2
Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.
More Stories in MS-LS4-2
- Fossils
Newfound fossil is not a teen T. rex but a whole new species
Now known as Nanotyrannus, this mini dino could have roamed the late Cretaceous alongside T. rex.
- Plants
Potatoes and tomatoes share a surprising history
Today’s potato likely came from a chance cross between an ancient tomato and a spud-less potato-plant lookalike, research shows.
- Fossils
New clues about dino speed come from birds strutting through mud
Fossilized footprints can help calculate how fast dinosaurs moved. But tests with guinea fowl show that past estimates might not be right.
- Animals
Dinosaurs are still alive. Today, we call them birds
Birds don’t look like the scaly giants of Jurassic World. But fossils are revealing how these modern-day dinosaurs descended from ancient reptiles.
- Animals
Elusive worm-lizards sport weird, spooky skulls
CT scans of these mysterious creatures turned up bizarre internal features. They could offer clues about amphisbaenians’ largely unknown behavior.
- Animals
Scientists Say: Megalodon
The extinct megalodon (Otodus megalodon) was the largest shark to ever prowl the oceans.
- Tech
Artificial intelligence helped design a new type of battery
Supercomputing and AI cut the early discovery steps from decades to just 80 hours. The process led to a new solid electrolyte.
- Life
Bacterial fossils exhibit earliest hints of photosynthesis
Microscopic fossils from Australia suggest that some bacteria evolved structures for oxygen-producing photosynthesis by 1.78 billion years ago.
- Animals
A newfound type of hedgehog is small, dark and adorable
At first, this hedgehog was mistaken for a lookalike relative. But its teeth, skull shape and DNA confirmed it as a new species.
