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In This Issue

You Are Who You Are by Default: It may be off when you’re on, but the brain network behind daydreams and a sense of self is no slacker
The Star That Ate a Mars: Astronomers study white dwarf pollution for clues to extrasolar planet ingredients
Bad Breath: Studies are homing in on which particles polluting the air are most sickening — and why
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Climate change shrinks sheep

Milder winters help small, weak lambs survive but more competition for food slows growth.
Found in: Life and Zoology
Concerns over bisphenol A continue to grow

Recent research finds that the hormone mimic may be more prevalent and more harmful than previously thought, highlighting why BPA is a growing worry for policy makers.
Found in: Biomedicine, Chemistry, Environment and Science & Society
Schizophrenia risk gets more complex

Three studies find that large collections of variants, rather than just a few key mutations, probably predispose someone to schizophrenia.
Found in: Behavior, Biomedicine and Genes & Cells
Mass mismatch makes mystery for proton’s strange cousin

An exotic cousin of the proton is caught in action again. But its measured mass doesn’t match previous results.
Found in: Matter & Energy and Physics
Dirty snow may bring green burst to mountain peaks

Dust blowing in from distant deserts speeds the melting of snow and may shake up ecosystems on the slopes.
Found in: Earth and Environment
Hornets suffocate in bee ball

Researchers find a spike in carbon dioxide, along with an increase in heat, makes honeybees' enemies vulnerable.
Found in: Life
New cyclone predictor

Researchers link occasional sea-surface warming in central Pacific with more, stronger hurricanes in North Atlantic.
Found in: Earth
New drug hits leukemia early

An experimental drug may stop a deadly leukemia in its early stages, a study of mice shows.
Found in: Body & Brain and Genes & Cells
2-year-olds possess grammatical insights

Toddlers discern basic rules for using nouns and verbs at least one year before speaking in complete sentences, French brain researchers report.
Found in: Humans and Psychology
Salamanders don’t regrow limbs from scratch

A closer look at regeneration in axolotl amputees shows that tissue replacement relies on cellular “memory.”
Found in: Genes & Cells and Life
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