How apples get their shapes

How do apples grow that distinctive shape? Now, a team of mathematicians and physicists have used observations, lab experiments, theory and computation to understand the growth and form of the cusp of an apple.

When the western US burns, the east also gets sick

While most of the largest U.S. wildfires occur in the Western U.S., almost three-quarters of the smoke-related deaths and visits to the emergency room for asthma occur east of the Rocky Mountains. A new study finds that smoke contributes to a larger pe…