HS-ESS2-7
Construct an argument based on evidence about the simultaneous coevolution of Earth systems and life on Earth.
- Earth
Dino double whammy
Most scientists think an asteroid helped kill off the dinosaurs. But new calculations suggest that asteroid might have gotten some help from a long series of volcanic eruptions in what is now India.
- Animals
Tar pit clues provide ice age news
New analyses of insects and mammals trapped in the La Brea Tar Pits point to climate surprises during the last ice age.
- Animals
When life exploded
Life exploded in diversity during the Cambrian Period. Experts are exploring what could account for this sudden change 540 million years ago.
- Earth
How people have been shaping the Earth
We are the dominant force of change on Earth. Some experts propose naming our current time period the ‘Anthropocene’ to reflect our impact.
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