1. Question: What is the largest planet in our solar system? Answer: Jupiter 2. Question: What is the fastest animal on land? Answer: The cheetah 3. Question: What are the three layers of the Earth?

Last Word is New Scientist’s long-running series in which readers give scientific answers to each other’s questions, ranging ...

Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...

Plugging medical symptoms into Google is so common that clinicians have nicknamed the search engine “Doctor Google.” But a newcomer is quickly taking its place: “Doctor Chatbot.” People with medical ...