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AnimalsFemale chimps play with ‘dolls’
Youngsters mimic mothering by cradling sticks, reigniting debate over sex differences in toy choices.
By Bruce Bower -
SpaceCosmic reincarnation idea may be dead
Cosmological patterns that were recently put forth as evidence for a pre–Big Bang universe are easily explained by current theory, critics say.
By Ron Cowen -
EarthBugged forests bad for climate
Trees savaged by pine beetles are slow to recover their ecological function as greenhouse gas sponges.
By Janet Raloff -
2010 Science News of the Year: Science & Society
Credit: Ayimages/Istockphoto Vaccine link to autism dismissed In February, Lancet formally retracted a 1998 study that had kindled a storm of opposition to vaccines (SN Online: 2/3/10).