Humans throughout history have invented a variety of ways to fight back against troublesome bacteria. But bacteria live in a dangerous world too. The human body and other bacteria-rich environments ...

The writer Malcolm Gladwell popularized the term "tipping points" to refer to the moment when a trend or social behavior crosses a threshold and rapidly spreads everywhere. In physics, tipping points ...

Limbs evolved as a means of locomotion. From the primitive rotating flagella of bacteria to the wings of flies and even our own legs, animals use these appendages to travel to find food or mates, or ...

Kareem El-Badry, associate professor of astronomy at Caltech, has been selected as one of 20 Packard Fellows for 2026. The Packard Fellowships for Science and Engineering provide just under $990,000 ...

Although increased cell proliferation is a hallmark of cancerous tissues, in some cases, it may actually be protective against tumor growth, according to a new study from Caltech researchers. Using ...

Two new multi-institution collaborations led by Caltech scientists have been selected to receive first-round funding from the U.S. Department of Energy (DOE) as part of the Genesis Mission, a national ...

Rudolph A. (Rudy) Marcus, Caltech's John G. Kirkwood and Arthur A. Noyes Professor of Chemistry, passed away on July 16, 2026. The prolific chemist, who approached theory with infinite curiosity and ...

Our cosmos is awash with radio waves, originating from fierce jets blasting out of distant black holes, blinking dead stars closer to home, and many other exotic objects. To observe radio waves—which ...

How did life make the leap from single cells to coordinated, multicellular organisms? And how do genetically identical cells still perform a version of that feat every time an embryo begins to take ...

If you could take an apple and break it into smaller and smaller parts, you would find molecules, then atoms, followed by subatomic particles like protons and the quarks and gluons that make them up.

Ultrasounds are a critical part of modern health care, helping to image soft tissue and organs, measure blood flow, and monitor fetal development. But the technique ...

Quantum computers of the future may be closer to reality thanks to new research from Caltech and Oratomic, a Caltech-linked start-up company. Theorists and experimentalists teamed up to develop a new ...