Physics
- Chemistry
New molecular knot is most complex yet
The knot is woven from 192 atoms of carbon, hydrogen, oxygen and nitrogen and forms a triple braid with eight crossing points.
- Paleontology
Readers weigh in on dinos, dark matter and more
Ancient bird calls, the search for dark matter and more in reader feedback.
- Particle Physics
Dark matter still missing
The XENON100 experiment found no evidence of an annually varying dark matter signal.
- Physics
New form of hydrogen created
Scientists have created negatively charged clusters of hydrogen for the first time.
- Physics
‘Time Travel’ tours a fascinating fiction
James Gleick’s entertaining book Time Travel focuses more on fantasy than real science.
- Physics
Antimatter hydrogen passes symmetry test
Antihydrogen atoms behave similarly to normal hydrogen atoms.
- Physics
Year in review: Gravitational waves offer new cosmic views
The first direct detection of gravitational waves will open a new window on black holes and introduce a new era in astronomy.
- Physics
Shadows of two failed searches loom over physics
Physicists are facing two failures this year with no detections of dark matter particles and no signs of supersymmetry from the Large Hadron Collider.
- Quantum Physics
Vacuum’s quantum effect on light detected
Light can be polarized through interactions with empty space.
- Materials Science
Graphene Silly Putty detects pitter-patter of spider footsteps
Sensor made of graphene and Silly Putty can detect pulse, breathing — and spider feet.
- Earth
Third kind of quasicrystal found in Russian meteorite
A new quasicrystal found inside a Russian meteorite is the first ever found in nature before being synthesized in the lab.
- Quantum Physics
Cosmic test confirms quantum weirdness
Physicists used starlight to perform a cosmic Bell test.
