This month, India began the immense undertaking of surveying over 1 billion people in the world’s largest ever census, inspiring us to explore some population science

Climate change does not cause earthquakes, but some scientists are asking whether our warming world will influence when, where and how often earthquakes occur.

Can we trust AI? Its answers are not always correct. And it only knows what it's been trained on, so some of its responses can contain bias. Tech experts offer us some solutions.