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Earth’s Ancient Shield: Scientists Crack the Billion-Year-Old Mystery of the Magnetic Field

A new model uncovers how Earth’s liquid core has sustained its magnetic field since the planet’s beginnings, offering new insights into its future. Earth benefits from the presence of a magnetic field, which acts as a shield against harmful cosmic radiation and makes life possible. In contrast, p

Scientists achieve electrically driven perovskite laser using dual-cavity design

In a recent Nature study, scientists have demonstrated an electrically driven perovskite laser using a dual-cavity design, addressing a challenge that has persisted in the field for over a decade.

The dual-cavity laser device developed by a team from Zhejiang University shows a lasing threshold an order of magnitude lower than state-of-the-art electrically driven organic lasers and offers superior operational stability with rapid modulation capabilities.

Phys.org spoke with the research team about their work.

Beaming Your Mind to a Starship or Colony

Can we travel the stars without a body? Explore the idea of uploading your mind and transmitting it at light speed to distant starships or colonies—becoming data instead of a passenger.

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