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11 articles from ScienceDaily

Hidden source of carbon found at the Arctic coast

A new study has shown evidence of undetected concentrations and flows of dissolved organic matter entering Arctic coastal waters coming from groundwater flows on top of frozen permafrost. This water moves from land to sea unseen, but researchers now believe it carries significant concentrations of carbon and other nutrients to Arctic coastal food webs.

A pigment from ancient Egypt to modern microscopy

Egyptian blue is one of the oldest humanmade colour pigments. It adorns the crown of the world famous bust of Nefertiti: but the pigment can do even more. An international research team has produced a new nanomaterial based on the Egyptian blue pigment, which is ideally suited for applications in imaging using near infrared spectroscopy and microscopy.

Expanding universe: We may be in a vast bubble

The few thousand galaxies closest to us move in a vast 'bubble' that is 250 million light years in diameter, where the average density of matter is half as large as for the rest of the universe. This is the hypothesis put forward by a theoretical physicist to solve a conundrum that has been splitting the scientific community for a decade: at what speed is the universe expanding?

Photons and electrons one-on-one

The dynamics of electrons changes ever so slightly on each interaction with a photon. Physicists have now measured such interplay in its arguably purest form -- by recording the attosecond-scale time delays associated with one-photon transitions in an unbound electron.