Penn is among the U.S. colleges offering generous financial aid based on income.

Researchers co-led by Jonathan Miner of the Perelman School of Medicine have identified a protein in cells that spurs the release of infection-fighting molecules.

Penn researchers have shown that people born roughly before 1965 had higher levels of antibodies—proteins that bind to parts of the virus—which cross-react to the current strain of bird flu.

Speaking about a changing understanding of dark energy, Bhuvnesh Jain of the School of Arts & Sciences says, “It's moving from a really surprising finding to almost a moment where we have to throw out how we've thought about cosmology and start over.”

Ezekiel Hernandez of the Wharton School discusses benefits to the U.S. of immigration.

Speaking about cognitive shuffling, a mental exercise to bring on sleep, Jorge I. Mora of the Perelman School of Medicine says, “We need to study this more to be able to fully say, yes, this should be a consistent tool.”

Mina Massaro-Giordano of the Perelman School of Medicine says that exposure to the blue light wavelength can help regulate circadian rhythm.

Carlo Siracusa of the School of Veterinary Medicine comments on family dynamics in a litter of puppies.

According to the Penn Wharton Budget Model, proposed tax cuts by Congress account amount to $6.8 trillion in federal revenue losses if they expire after 2033.