Tech Startups Feel an IPO Chill

Dropbox Inc. had no trouble boosting its valuation to $10 billion from $4 billion early last year, turning the online storage provider’s chief executive into one of Silicon Valley’s newest paper billionaires.

LSD Archive Has Been on a Long, Strange Trip

BERN, Switzerland—Albert Hofmann realized he had invented LSD after a vivid experiment in 1943. The Swiss chemist retired a few decades later, and his personal archive began a long, strange trip that ended at a quiet institute in this leafy city—where it is looked after by a part-time dairy farmer.

Scientists’ Work on DNA Repair Earns Nobel Prize in Chemistry

STOCKHOLM—A trio of scientists was awarded the Nobel Prize in chemistry for describing how cells repair damaged DNA, breakthroughs that are helping to guide the development of new cancer drugs.

Is Your Refrigerator Running? No, Really, You Won a Nobel Prize

The phone rings in the middle of the night. The number is unrecognizable. The voice on the other end of the line is unfamiliar—and it comes with a Swedish accent.

Soon, Power Will Be Delivered to Your Device by Air

In 1902 workers completed a mysterious tower, 187 feet high and shaped like a giant mushroom, on which rested the hopes of one of the 20th century’s most prolific geniuses.

POWER UP

Energy innovation and energy “transition” are today’s hot topics. President Barack Obama aims to have 20% of U.S. electricity come from wind and solar by 2030. Presidential candidate Hillary Clinton has gone one better: A few weeks gao she pleaded that, within 10 years of her taking office, there would be enough renewable electricity to power every home in America.

70 Years On: A Hiroshima Survivor's Tale

HIROSHIMA, Japan—Every year, Koko Tanimoto Kondo tours her hometown carrying the tiny, tattered pink tunic she wore on the day, 70 years ago, when she and her family survived the world’s first atomic bombing.

Physics for Bird Brains

There is a sense in which all of biology is quantum biology. The entangled strands of DNA, the famous double helix of the molecule of life, are held together by a quantum phenomenon known as hydrogen bonding.

Scientists See Ways to Target Alzheimer's in Proteins

Alzheimer’s disease researchers are hunting for new clues by comparing how different proteins in the brain are damaged in the same way. The work might also lead to greater understanding of other neurological disorders.

Scientists Discover An Elusive Particle

Scientists using Europe’s Large Hadron Collider atom-smashing machine have stumbled on the existence of an exotic particle known as the pentaquark, a discovery that could shed light on how everyday matter is constituted.

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