At Sete Cidades in São Miguel Island, Azores, Portugal, two lakes appear in distinct green and blue tones. Light reflection, depth differences, and algae contribute to the color contrast. The volcanic ...

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Abstract: Many applications of beams from laser plasma accelerators (LPAs) require high brightness electron beams enabled by low emittance. One proposal to achieve ...

I need advice on how to explain a friend group breakup to my kids (not about politics!). My kids are 9 and 11. We have a core friend group of four families at our synagogue (we will call them families ...

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Families and friends of the women, many from the Bay Area, confirmed their identities. The women went on regular trips to the Tahoe region and were experienced skiers, the families said. By Sabrina ...