Editors' Choice

Immunology: Energy to Burn
The life of a T cell can be very demanding—at least as far as metabolism is concerned. An encounter with a pathogen calls for rapid proliferation and, for the subset … [Read more]

Applied Physics: Magnetized at the Interface
Magnetism arises when electron spins in a solid align parallel (ferromagnetism) or antiparallel (antiferromagnetism) to each other. Especially useful in today's computer industry is the so-called exchange bias, a somewhat … [Read more]

Genetics: Mom's in Charge
Imprinting is a genetic mechanism that directs an offspring to use only one copy of a parental gene. Typically, this occurs through the directed expression of an allele from only … [Read more]

Materials Science: A Model for Aging
When cooled below the glass transition temperature, amorphous polymers show a sudden and rapid increase in viscosity, which macroscopically manifests as a hardening or solidifying of the material. Nonetheless, even … [Read more]

Evolution: Getting from One to Two
Life on Earth was initially unicellular, but at some point these morphologically simple organisms started forming cooperative clusters of cells that allowed them to overcome the limited size and complexity … [Read more]

Biomedicine: All Eyes on Epigenetics
Cancer geneticists who are cataloging the genes mutated in human tumors have encountered a recurring theme: Many tumor types carry mutations in genes implicated in epigenetic mechanisms that regulate gene … [Read more]

Chemistry: Polymer, Heal Thyself
Damage to a polymer, such as a cut or crack, can be repaired if it's possible to recover the reactive groups that initiate and sustain polymerization. Zheng and McCarthy show … [Read more]

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