Feature
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- Physics
Through the Looking Glass
A proposed universe of unseen material, where every ordinary particle has a shadowy counterpart, could explain several conundrums in cosmology.
- Earth
New Concerns about Phthalates
Boys may face an eventual reproductive risk from exposure to some of the ingredients that go into many common plastics, cosmetics, and medical supplies.
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- Physics
Seeking the Mother of All Matter
World's mightiest particle collider may transform less-than-nothing into a primordial something.
