New findings published this week in Physical Review Letters suggest that carbon, oxygen, and hydrogen cosmic rays travel through the galaxy toward Earth in a similar way, but, surprisingly, that iron arrives at Earth differently. Learning more about how cosmic rays move through the galaxy helps address a fundamental, lingering question in astrophysics: How is matter generated and distributed across the universe?

“So what does this finding mean?” asks John Krizmanic, a senior scientist with UMBC’s...

Researchers from the Turku PET Centre and Technical University of Munich have discovered a new mechanism controlling satiation. According to the recently published study, the hormone secretin induces satiation by activating brown adipose tissue.

Brown adipose tissue is known for its ability to generate heat in response to cold exposure. Its activity has been proven to be connected to normal weight and glucose metabolism as well as lesser risks of cardiovascular diseases. Meals have also been shown to increase the thermogenesis in brown fat, but the significance of this phenomenon has been unclear.

• Secretin is a hormone secreted into blood circulation by the intestines, and ...

The mystery of an exotic kind of superconductivity has been solved — by showing that it just does not exist. An effect, which has been celebrated since the 1990s has now been shown to be standard superconductivity. Still, this realization leads to important new ideas.

A single measurement result is not a proof — this has been shown again and again in science. We can only really rely on a research result when it has been measured several times, preferably by different research teams, in slightly different ways. In this way, errors can usually be detected sooner or later.

However, a new study by Prof...

Combining atomic-scale sample analysis and models simulating likely conditions in the nascent solar system, the study revealed clues about the origin of crystals that formed more than 4.5 billion years ago. The findings provide insights into the fundamental processes underlying the formation of planetary systems, many of which are still shrouded in mystery.

For the study, the team developed a new type of framework, which combines quantum mechanics and thermodynamics, to simulate the conditions to which the grain was exposed duri...