In the mid-20th century, Carl Sagan pioneered the search for extraterrestrial intelligence (SETI) in the United States, and prominent Russian astrophysicist Nikolai Kardashev did the same in the Soviet Union, the other great scientific superpower of the time. From that vantage point, he proposed using an alien civilization’s energy needs as a way to categorize … Read more
hubble tensionA stubborn contradiction between two methods of measuring the rate of expansion of the universe has long plagued modern physics. Some scientists had hoped that it would eventually resolve itself to measurement error. New findings suggest otherwise. To understand what’s at stake, we need to step back a little. In the 1920s, astronomer Edwin … Read more
President Donald Trump has launched his latest attack on renewable energy, accusing Britain of being “crazy” for not encouraging oil drilling in the North Sea. advertisement advertisement The British government ended exploration licenses last year, meaning companies can no longer obtain permission to explore for new oil and gas reserves in undeveloped areas. This does … Read more