Cows in a field

SMELL THAT  Breathing in dust from dairy farms could protect kids from developing allergies and asthma. Dried-up cow manure could harbor the bits of bacteria that tell lung cells to calm down when faced with allergens.

pulsar PSR B1257+12

RARE FIND  The three rocky planets around pulsar PSR B1257+12 (illustrated) were the first confirmed exoplanets. Pulsar-orbiting planets are quite rare, a new survey suggests. 

Lions attacking cape buffalo

BITE CLUB  Regardless of where an ecosystem is, the predators and prey appear to follow roughly the same rule in their relative rates of increase, a new study says.

Y dwarf illustration

JUST CHILLIN’  Some brown dwarfs, such as the “Y dwarf” illustrated here, have temperatures at or below room temperature. Y dwarfs were discovered in 2011. 



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