Temporary Closed

The US and UK aren’t the only embassies shutting their doors in San’a – the French, Germans, Japanese and Spain have also closed.

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December 21, 2010

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The US and UK aren’t the only embassies shutting their doors in San’a – the French, Germans, Japanese and Spain have also closed.

Near East Studies Scholar, Princeton University

Monthly Issue April 2026

In this monthly issue, we examine how our understanding of energy — and how we source and use it — is evolving.

1 video 11 articles

For decades, theorists have been cooking up "theories of everything" to explain our Universe. Are all of them completely off-track?

by Ethan Siegel

Data centers consume enormous amounts of power, but their steady demand could make the grid more efficient — and lower costs for everyone.

by Ross Pomeroy

On cosmic scales, only dark matter (or something equivalent) gives us the Universe we observe. Now, the Sunyaev-Zel'dovich effect agrees.

by Ethan Siegel

Every time a new star forms, there's an opportunity to form planets alongside and around it. How does it happen, and how long does it take?

by Ethan Siegel

Learn from the world's biggest thinkers.