Scientists probe the limits of ice

How small is the smallest possible particle of ice? It's not a snowflake, measuring at a whopping fraction of an inch. According to new research published in Proceedings of the National Academy of Sciences, the smallest nanodroplet ...

Birth of massive black holes in the early universe revealed

The light released from around the first massive black holes in the universe is so intense that it is able to reach telescopes across the entire expanse of the universe. Incredibly, the light from the most distant black holes ...

Tropical crow species is highly skilled tool user

An international team of scientists and conservation experts has discovered that the critically-endangered Hawaiian crow, or 'Alalā, is a highly proficient tool user, according to a paper published today in the leading scientific ...

Pens filled with high-tech inks for do-it-yourself sensors

A new simple tool developed by nanoengineers at the University of California, San Diego, is opening the door to an era when anyone will be able to build sensors, anywhere, including physicians in the clinic, patients in their ...

Researchers find security flaws in backscatter X-ray scanners

A team of researchers from the University of California, San Diego, the University of Michigan, and Johns Hopkins University have discovered several security vulnerabilities in full-body backscatter X-ray scanners deployed ...

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