HS-LS1-3
Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.
- Health & Medicine
Catching ZZZs may retrieve lost memories
Forgetful? Maybe you’ve forgotten to get enough shuteye. A study in fruit flies suggests that a good sleep can boost their ability to remember things.
- Health & Medicine
Scientists Say: Hormone
This is a chemical that travels in the blood and acts as a signal. It can tell distant body parts what to do. When a chemical acts in this way, it has a special name.
- Microbes
Life’s ultra-slow lane is deep beneath the sea
Biologists had suspected the deep seafloor would be little more than barren sediment. But they found a surprising amount of oxygen — and life.
- Animals
Hellbenders need help!
Hellbenders already face threats such as habitat loss, pollution and disease. But climate change could make matters worse. And the problems facing hellbenders could spell trouble for more than just these giant amphibians.
- Animals
Resilient hearts for deep-sea divers
How do aquatic mammals have enough energy to hunt prey while steeply dropping their heart rate to stay underwater? A new study of dolphins and seals provides clues.
- Microbes
Cold noses nurture colds
The common cold infects the nose. Scientists long have known the virus grows better there, but not why. Now, a study finds the body’s defenses simply don’t work as well under the nose’s slightly cooler temperatures.
- Computing
Virtual wounds: Computers probe healing
To better understand how the body heals wounds, scientists have begun creating computer programs that let virtual cells fight it out. These ‘computer games’ could lead to better medicines.
- Health & Medicine
Scientists say: Inflammation
When cells are injured, they send out distress signals. The rescuing cells cause more blood to flow to the area, producing inflammation.
- Animals
Scientists say: Hibernaculum
This week’s word is hibernaculum, the word scientists use to describe the place where an animal goes to hibernate.
- Brain
Learning rewires the brain
Brain cells actually change shape as we learn. It’s one way we cement new knowledge. And much of the action happens as we sleep.
- Fossils
Hot-blooded dinos? Try lukewarm
New study finds these reptiles may have had an internal furnace that sort of resembled some sharks. It appeared to run neither hot nor cold.
- Genetics
Owww! The science of pain
No one likes pain, but it keeps us alive. That’s why scientists want to learn how best to coexist with this complicated and still somewhat mysterious sensation.
