What is Robert Langer known for in science?

Robert Langer is known for making tiny helpers that can do big jobs inside the body.

Imagine you have a toy car that can carry little pieces of candy to your friend across the room, that’s kind of what Robert Langer does, but with medicine instead of candy. He helps create smart materials that can slowly give out medicine exactly when it's needed, like a tiny robot working inside the body.

Robert Langer helped make drug delivery systems, which are like little envelopes that carry medicine through the body. These envelopes open up at just the right time, so the medicine can work better and cause fewer side effects. It’s like having a special helper who knows when to give you your snack, not too early, not too late.

He also helped make new ways for doctors to put medicine into the body. Sometimes it's through a patch on the skin or even tiny particles that go directly into the blood. This means people can get better without having to take lots of pills every day, it’s like getting help from a super-smart helper who knows exactly when and how to do their job.