Biologists use GPS loggers, cameras and radio transmitters to spy on Denali's top predator.
The gray wolf plays a key role in preserving the natural ecosystem of Alaska's Denali National Park.
Without wolves, Alaska's Denali wilderness ecosystem could collapse. So scientists track their every movement.
The Surui in Brazil are fending off illegal ranchers, gold miners and loggers. Their weapons: boots on the ground, satellite images and smartphones.
The Surui tribe in Brazil turn to smartphones and Google to save their land and their culture.
UFC champion Robert Whittaker has a spreadsheet so detailed, it predicts how he's going to feel before he starts training.
New early warning systems mean scientists can better forecast when a mountain is about to blow its top.
Eruptions happen. Science can help us get out of the way.