How to Spot Clandestine Nuclear Bomb Tests
Illicit detonations are anything but secret
Stories by Katie Peek
The Sunspot Cycle Is More Intricate Than Previously Thought
The sun's dark spots cycle every 11 years—as well as every 88, 200, and 2,400 years
Is Daylight Saving Time Good or Bad for You?
Research shows that the benefits may outweigh the drawbacks
Misled Penguins Swim to Feeding Grounds That No Longer Have Food
Young birds follow the right signal to foraging grounds, but when they arrive there are no fish to eat
Proposed Space Station Aims for the Moon and beyond
The ambitious plan to send astronauts to lunar orbit has drawn skepticism
The Northwest Passage Remains Treacherous, Despite Ice Retreat
Arctic route may remain treacherous for decades
How Old Observations Are Building Hubble's Legacy
Data from the space telescope will yield discoveries long after the instrument is kaput
Is the Rise in Twin Births Cresting?
Fertility procedures have pushed multiple births higher, prompting policy changes
Affluent Millennials Are Moving into Inner Cities
The young and affluent move downtown, pushing out the poor
![How to Survive in a Warmer World [Interactive]](https://static.scientificamerican.com/sciam/cache/file/C909068C-01F3-4457-86B7E7AC5252E43B_agenda.jpg?w=275&h=154&fit=crop)
How to Survive in a Warmer World [Interactive]
A map of Earth in 2100 reveals where livelihoods are at stake due to climate change—and what people are doing to prepare for that future
What Life Will Be Like on a Much Warmer Planet
A map based on new data reveals where climate change threatens peoples’ ways of life—and what they are doing to prepare for the future
