By early March, most Americans were aware of the strange infectious virus spreading overseas. But for many it remained remote, foreign, vague — we were still going into offices and sending children to school and living life generally as we had before.

Horned dinosaurs’ weapons evolved to handle the forces of combat
Artemis II results show how much science people can do at the moon
Crossword: Time lines
Many American diets may not include enough of this essential nutrient
A telling hole in a Neandertal bone hints at a bitter end
Brain implants are helping people who’ve lost their voice
COP17: The world has a plan to save nature. Is it working?
Flour sacks turned flood barriers: Gaza faces another winter without safe shelter
WHO scales up Ebola readiness in 22 countries across three continents
Ukraine: Civilian casualty rates among ‘deadliest’ in years, as energy attacks intensify