Light powers everything from communications to sensing, yet even tiny imperfections can scatter it and weaken signals. To ...

CU Boulder researchers have built high-performing optical microresonators, opening the door for new sensor technologies. At ...

Even Charles Darwin was puzzled by the evolution of the vertebrate eye. New research suggests that it traces back to a cyclopean invertebrate with a single eye atop the head.

Section A covers Biology, with 16 questions carrying 30 marks. Section B covers Chemistry, with 13 questions carrying 25 marks.