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X-ray beams aren’t used just by doctors to see inside your body and tell whether you have a broken bone. More powerful beams made up of very short flashes of X-rays can help scientists peer into the structure of individual atoms and molecules and differentiate types of elements. But getting an X-ray laser beam that delivers super short flashes to capture the fastest processes in nature isn’t easy – it’s a whole science in itself. Radio waves, microwaves, the visible light you can see, ultraviolet light and X-rays are all exactly the same phenomenon: electromagnetic waves of energy moving through space. What differentiates them is their wavelength. Waves in the X-ray range have short wavelengths, while radio waves and microwaves are much longer. Different wavelengths of light are useful for different things – X-rays help doctors take snapshots of your body, while microwaves can heat up your lunch.

The technology, called Distributed Acoustic Sensing, transforms cables into continuous underwater microphones that can pinpoint whale locations and track their movements.

BEIJING, China — Alibaba announced on Wednesday a “milestone collaboration” in artificial intelligence (AI) tech with US chip giant Nvidia that the Chinese company said will accelerate its development of humanoid robots. The news came as Alibaba’s shares soared more than 9 percent in Hong Kong after chief executive Eddie Wu unveiled plans to further ramp