Do 'bouncing universes' have a beginning?

In trying to understand the nature of the cosmos, some theorists propose that the universe expands and contracts in endless cycles.

Scientists develop a lithium-ion battery that won't catch fire

A flexible lithium-ion battery designed by a team of researchers from the Johns Hopkins Applied Physics Laboratory and built to operate under extreme conditions—including cutting, submersion, and simulated ballistic impact—can ...

The first stages of DNA evolution

One fundamental question in the field of the Origin of Life is how the first molecules of DNA replicated and evolved on the primordial Earth, more than 4 billion years ago. Before the emergence of the first cells or any other ...

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