The letters-to-the-editor section of Science, one of the world's top scientific journals, is taking a new stance on what arguments it will accept about those accused of sexual harassment.
A professor of engineering breaks down what the 'Oumuamua projectile could possibly be and the secrets it could hold–but we still have no definite answers.
The letter expressed concerns over the president's use of dubious scientific sources and called on him to appoint a director to the Office of Science and Technology Policy.