Life
- Animals
Analyze This: Cows burp less methane after early-life treatment
Calves that receive the 14-week treatment belch less of the greenhouse gas, possibly due to shifts in their gut microbes.
- Genetics
Let’s learn about DNA
DNA is made of two chemical chains twisted around each other. It stores information that allows cells to grow and function.
- Plants
Scientists may have finally found how catnip repels insects
The plant deters mosquitoes and fruit flies by triggering a chemical receptor that, in some animals, senses pain and itch.
- Plants
Urban gardens create a buffet for bees
City gardens provide a huge amount of nectar and pollen for pollinators, making them an essential conservation tool.
- Climate
Changing climate now threatens northern lakes year round
Lakes in northern climes are getting warmer, and that’s not good for people, plants or animals.
- Brain
Scientists Say: Neuron
Neurons are the foundational cells in the nervous system. They pass along and process information using electrical signals.
- Health & Medicine
Teen depression linked to how the brain processes rewards
Depression in teens alters their brains’ pathways in ways that may put those kids at risk of lifelong mental-health problems — unless they get help.
- Earth
Fin whales could help scientists map what lies below the seafloor
Fin-whale calls are loud enough to penetrate into Earth’s crust, offering scientists a new way to study the properties of the ocean floor.
- Life
Scientists Say: Hominid
Scientists are still working out what counts as a hominid. Some say it’s just people and our extinct ancestors. Others say add more apes.
- Physics
Butterflies use jet propulsion for quick getaways
If you have ever tried to catch a resting butterfly, you know they are surprisingly difficult to nab. A new study helps explain why.
- Animals
More playtime and meatier meals might reduce kitty kills
Keeping cats indoors is the best way to prevent them from killing wildlife. But small changes to diet and play can help, too.
- Life
Scientists Say: Egg and sperm
An egg or a sperm cell contains half of the normal genes an organism needs. They fuse together to form a new individual.
