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Still No Explanation for Matter/Antimatter Imbalance

An astrophysicist explains that the predominance of matter in our universe is just weird, and has no explanation.

May the Weak Force Be With You

We couldn't live without the weak force, the least understood and underappreciated natural force.

Big Bang Antimatter Problem Deepens

The most precise measurements ever show that particles and their antiparticles are perfect mirror images of each other.

Surprising Animals Old and New

Moving creatures, whether extant or extinct, never cease to hold fascination for human observers.

Even for Quantum Particles, Time Flows One Way

Claims of time symmetry at the quantum level have been discounted by a high-reliability experiment by the Department of Energy.
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