Star Polymers, Space Origami and Singing Finches: The Winners of Our 2nd Annual STEM Writing Contest From snake venom and egg shells to Alzheimer’s and Covid-19, students explain concepts from the world of science, technology, engineering and math. Two of our top 11 winners wrote about why sleep is essential for maintaining our brain’s physiological functioning — and how it might help prevent dementia. Jocelyn Tan, 15, used this Opinion piece about the glymphatic system as a source for her essay. Credit...Eiko Ojala April 29, 2021 Where do scientists — and science writers — get their ideas? They pay close attention to the world around them and ask questions, then look for answers to the ones that fascinate them most.