Science

The CDC’s vaccine advisers are weighing controversial proposals to scale back recommendations for COVID-19, hepatitis B, and chickenpox vaccines. Supporters call it a recalibration of public health policy, while critics warn it could limit access and erode decades of disease prevention progress.

Astronomers have witnessed a gamma-ray explosion outside our galaxy that pulses repeatedly over 24 hours — a mysterious, powerful event unlike anything seen before. Observations from Hubble and many telescopes are now racing to reveal what cosmic engine could sustain such energetic, long-lasting bursts.

Former CDC Director Susan Monarez alleges she was fired after refusing to “preapprove” vaccine recommendations pushed by Health Secretary Robert F. Kennedy Jr. Her testimony before the Senate highlights a growing clash between science and politics, with profound implications for vaccine policy and public trust.