The instructions for building all of the body’s proteins are contained in a person’s DNA, a string of chemicals that, if unwound and strung end to end, would form a sentence 3 billion letters long.
School of Arts & Sciences
Sarah Tishkoff of the School of Arts and Sciences and the Perelman School of Medicine and postdoc student Michael Campbell of Medicine are featured for researching bitter taste sensitivity.
Four University of Pennsylvania graduate students have been named to the inaugural class of Emerging Leaders in Science and Society Fellows. ELISS is sponsored by the American Association for the Advancement of Science.
Burgeoning India is facing historic macroeconomic instability, and 2014 is shaping up to be a contentious election year there. Add a rapidly growing population and an overtaxed infrastructure, and it’s clear India is a case study in the urgent need for innovation.
It’s no coincidence that the expression “to leave a bitter taste in one’s mouth” has a double meaning; people often have strong negative reactions to bitter substances, which, though found in healthful foods like vegetables, can also signify toxicity. For this reason, the ability to sense bitterness likely played an important role in human evolution.
For solar panels, wringing every drop of energy from as many photons as possible is imperative. This goal has sent chemistry, materials science and electronic engineering researchers on a quest to boost the energy-absorption efficiency of photovoltaic devices, but existing techniques are now running up against limits set by the laws of physics.