This is the coolest satellite photo I’ve ever seen. Zoom around, spend time, learn the land: https://t.co/kLIFQLskX4 https://t.co/Oihlh1ql4L
How vaccines crushed polio in the US in the mid 1950s and measles in Nigeria after 2005. economist.com/graphic-detail… https://t.co/f3AsZRcEVV
How vaccines crushed polio in the US in the mid 1950s and measles in Nigeria after 2005. economist.com/graphic-detail… https://t.co/f3AsZRcEVV