Low-calorie diets can extend longevity, but new research is the first to show that calorie restriction influences the body’s circadian rhythms’ involvement with the aging process in cells. Credit: © photka / Fotolia cientists studying how aging affects the biological clock’s control of metabolism have discovered that a low-calorie diet helps keep these energy-regulating processes

The flexible tissue scaffold, shown here emerging from a glass pipette with a tip one millimetre wide, unfolds itself after injection into the body. This could enable surgeons to use minimally invasive techniques, which reduce recovery time, scarring and other negative effects. Credit: Miles Montgomery and Rick Lu A team of U of T Engineering

The cosmic velocity web is represented by surfaces of knots in red and surfaces of filaments in gray. The black lines with arrows illustrate local velocity flows within filaments and toward knots. The Laniakea Supercluster basin of attraction that includes our Milky Way galaxy is represented by a blue surface. The region being displayed extends

These two views of Saturn’s moon Titan exemplify how NASA’s Cassini spacecraft has revealed the surface of this fascinating world. Credit: NASA/JPL-Caltech/Space Science Institute Mere weeks away from its dramatic, mission-ending plunge into Saturn, NASA’s Cassini spacecraft has a hectic schedule, orbiting the planet every week in its Grand Finale. On a few orbits, Saturn’s

The massive field jackets containing the bones of the adult specimen of Daspletosaurus horneri were hauled out by a mule-drawn sled in August 2001. The crew are the outfitters from the Sun Canyon Lodge. Credit: David Varricchio An investigation by a team of scientists from Australia, Louisiana, Montana, New Mexico, and Wisconsin has identified and

This is an artist’s reconstruction of combat between two Daspletosaurus. Credit: Copyright Luis Rey A new study documents injuries inflicted in life and death to a large tyrannosaurine dinosaur. The paper shows that the skull of a genus of tyrannosaur called Daspletosaurus suffered numerous injuries during life, at least some of which were likely inflicted

An illustration of magnetic resonance elastography (MRE). MRE is a non-invasive technique that was used to measure how pulsed waves changed as they moved through the brain hippocampus, giving an accurate measure of the tissue’s elasticity and health of the cellular structure. Credit: Dr. Aron K. Barbey, University of Illinois at Urbana-Champaign Scientists have observed

Green microalga Chlamydomonas reinhardtii, a model system for molecular biology and environmental studies. Credit: © Dartmouth College Electron Microscope Facility, Louisa Howard The mercury found at very low concentrations in water is concentrated along the entire food chain, from algae via zooplankton to small fish and on to the largest fish — the ones we

Tropidogyne pentaptera. 100-million-year-old fossilized flower identified and named by OSU researchers George Poinar Jr. and Kenton Chambers. Credit: Image courtesy of George Poinar Jr., Oregon State University A Triceratops or Tyrannosaurus rex bulling its way through a pine forest likely dislodged flowers that 100 million years later have been identified in their fossilized form as

This is a map depicting apple’s ancient journey along the Silk Road. Credit: Alexa M Schmitz/Yang Bai Centuries ago, the ancient networks of the Silk Road facilitated a political and economic openness between the nations of Eurasia. But this network also opened pathways for genetic exchange that shaped one of the world’s most popular fruits:

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