Physicist Alan Guth, the father of cosmic inflation theory, describes emerging ideas about where our universe comes from, what else is out there, and what caused it to exist in the first place.

While the Big Bang Theory is widely supported within the scientific community, some researchers propose alternative ideas, such as eternal inflation or a cyclical, oscillating universe.

Keynesian economics dominated economic theory and policy after World War II until the 1970s, when many advanced economies suffered both inflation and slow growth, a condition dubbed “stagflation.” ...