Readers respond to a guest essay about the methods and reliability of science. Also: Opioid addiction; judges and presidents; cursive writing.

npj Science of Learning is part of the npj Series: open access community journals from Nature Portfolio publishing high-quality research, reviews and commentary across the life, health, physical, ...

Rescuing Science: Restoring Trust in an Age of Doubt was the most difficult book I've ever written. I'm a cosmologist—I study the origins, structure, and evolution of the Universe. I love science. I ...