Was Dyslexia the Secret to Leonardo da Vinci's Greatness?

THURSDAY, May 2, 2019 -- Leonardo da Vinci was an atrocious speller, a sure sign of dyslexia, but it's possible that very disorder fueled his genius, a researcher says.

May 2 marks the 500th anniversary of the death of da Vinci, an inventor and artist regarded by many as the most creative person ever known.

Potentially Blinding Shingles of the Eye on the Rise

THURSDAY, May 9, 2019 -- The virus that gave you chickenpox as a kid can rise again after decades of inactivity and inflict a painful, even blinding, eye infection in old age.

New research reveals that cases of eye-based "shingles" have tripled since 2004.