Climate
Some tree leaves are finding it too hot for photosynthesis
Earth’s ongoing fever threatens to push entire forests toward this heat limit — and possible death.
By Nikk Ogasa
HS-LS1-3
Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.
More Stories in HS-LS1-3
- Health & Medicine
How to be heat-safe when playing sports
Protecting young athletes from overheating is getting more important as climate change turns up the temperature.
- Health & Medicine
Scientists Say: Kidney
The kidneys remove waste and excess water from the blood, forming urine.
- Animals
When it’s hot, echidnas blow snot bubbles to cool off
These spiky Australian mammals have a trick to moisten their noses, allowing them to survive hot temperatures that should kill them.
- Health & Medicine
Explainer: Why it’s easier to get sick in the winter
Low humidity helps viruses survive, and cold weather blunts some of the body’s immune responses — making colds and other viral infections more likely.
- Brain
Scientists Say: Glymphatic System
The glymphatic system bathes the brain in cleansing fluids during sleep and clears away harmful cellular waste.
- Science & Society
What’s the fun in fear? Science explores the appeal of scary movies
On its face, the appeal of horror doesn’t make much sense. But scientists are starting to uncover who’s most likely to enjoy scary films and why.
- Animals
Sea sponges spew slow-motion snot rockets to clear out their pores
Sea sponges rely on a sneezing technique to clear their pores. The mucus flushes out debris — and provides a snack for other marine life.
- Climate
Heat waves appear more life-threatening than scientists once thought
This is bad news as a warming planet leads to growing numbers of excessive heat waves — and millions more people facing potentially deadly temperatures.
- Health & Medicine
Explainer: What is sickle cell disease?
Gene mutations can alter an individual’s hemoglobin in ways that curl their blood cells. This can cause painful sickle cell disease.
