Earth
Scientists Say: Snow line
On Earth, this line marks the edge of snow-covered ground. In space, it marks a spot where a certain molecule might freeze.
HS-ESS2-2
Analyze geoscience data to make the claim that one change to Earth's surface can create feedbacks that cause changes to other Earth systems.
More Stories in HS-ESS2-2
- Earth
Earth farts may explain some spooky floating lights
The gases released by earthquakes might occasionally ignite, triggering ghostly lights sometimes witnessed in South Carolina.
- Earth
Experiment: Can plants stop soil erosion?
Soil erosion washes pollutants into streams and rivers — but plants may help limit that.
- Climate
Warmer seas trigger skyrocketing ice loss in 3 Antarctic glaciers
Destabilized by waves and vanishing sea ice, one of the glaciers lost 25 kilometers (15.5 miles) of ice in 16 months — a possible hint of worse to come.
- 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.
- Climate
Let’s learn about why summer 2023 was so hot
Human-caused climate change has played a big role in this summer’s historic heat.
- Earth
A volcanic eruption sparked the highest lightning ever seen
The eruption plume spawned lightning that started 20 to 30 kilometers (some 12 to 19 miles) above sea level.
- Climate
Explainer: What is an atmospheric river?
These long-traveling storm systems bring moisture to many parts of the world. Here’s what scientists are learning about them.
- Earth
Analyze This: Salt may quash lightning over the sea
Bits of airborne salt may help raindrops form, removing water from clouds before it can freeze as part of the process that makes lightning.
- Climate
Greenland’s inland ice is melting far faster than anyone thought
Inland melting of the Northeast Greenland Ice Stream is accelerating — and may contribute far more to sea level rise than earlier estimates suggested.
