The respiratory tract is in direct contact with the outside environment and requires a precisely regulated immune system to provide protection while suppressing unwanted reactions to environmental ...

After 44 years, there’s finally a better way to find approximate solutions to the notoriously difficult traveling salesperson problem. When Nathan Klein started graduate school two years ago, his ...

However, in the case of a non-constant speed function, both the actual path and time required to travel between any pair of cities is unknown. A large collection of physical problems fall into this ...