Ebola RNA can remain in semen for hundreds of days

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Problems regarding atoms

Theorists solve a long-standing fundamental problem on atoms

The value of junk DNA

Variation in 'junk' DNA leads to trouble

Looking for gold in old cell-phones

Gold from old phones is real prospect thanks to chemical advance

Detecting cancer of the breast in a mammogramme

  Radiologists detect breast cancer in 'blink of an eye'

Exercising to maitain blood flow to the brain.

Use it or lose it: Stopping exercise decreases brain blood flow