Feature
- Life
Year in review: Microbe discoveries spur rethink of treetop of life
Microbes discovered in Arctic mud this year could be the closest relatives yet found to the single-celled ancestor that made life so complicated.
By Susan Milius - Quantum Physics
Year in review: Quantum spookiness is real
A new version of an experiment proposed in 1964 confirmed a counterintuitive tenet of quantum mechanics.
By Andrew Grant - Genetics
Year in review: Epigenome makes its debut
The Roadmap Epigenomics Project, unveiled in February 2015, is the first in a series of 3-D looks at the human genome.
- Physics
Year in review: Big stride for superconductivity
Compelling but not quite confirmed research in 2015 suggested that hydrogen sulfide is a superconductor at temperatures as high as 203 kelvins.
By Andrew Grant - Neuroscience
Year in review: Alzheimer’s protein behaves like a prion
Under rare conditions, an Alzheimer’s-related protein may have jumped between people, scientists reported this year.
- Planetary Science
Year in review: Best evidence yet for water on Mars
New data from the Mars Reconaissance Orbiter supported the presence of salty water on Mars.
- Earth
Year in review: Pacific Plate slides over slick layer
Some explosive science offered a glimpse into how tectonic plates slide around Earth’s surface.
- Genetics
Year in review: Cancer genetics grows up
Researchers looking for mutations linked to cancer have found that not all genetic alterations should be targeted equally.
- Animals
Year in review: Woes of artificial lighting add up for wildlife
Studies published this year add dodging death, flirting and mothering to the tasks that artificial light can discombobulate in wild animals.
By Susan Milius - Particle Physics
Year in review: Collider creates pentaquarks
Two particles discovered in 2015 are each composed of five quarks.
By Andrew Grant - Neuroscience
Year in review: ‘Speed cells’ help make navigation possible
The discovery of speed cells in the brain filled in a missing piece in the understanding of how the brain creates an internal map of the world.
- Environment
Year in review: BPA alternatives aren’t benign
Evidence is accumulating that at least one popular alternative to bisphenol A can enter the body and trigger developmental and physiological changes.
By Janet Raloff