1. Sputnik 1 (1957)Sputnik 1, sent into space by the Soviet Union on October 4, 1957, became the inaugural artificial satellite to circle Earth. Weighing 83.6 kilograms, it broadcasted basic radio sig...

1. Sputnik 1 (1957)Sputnik 1, launched by the Soviet Union on October 4, 1957, was the first artificial satellite to orbit Earth. Weighing 83.6 kilograms, it transmitted simple radio pulses that could...

Why Extreme-Weather Forecasting Matters More Than EverExtreme weather events such as heat waves, floods, hurricanes, wildfires, and droughts are increasing in frequency and intensity as the climate wa...

Introduction: Vaccines as the Greatest Life-Saving InnovationVaccination is widely regarded as one of the most powerful public health achievements in human history. By training the immune system to re...