A little more than a year ago, on a trip to Nairobi, Kenya, some colleagues and I met a 12-year-old Masai boy named Richard Turere, who told us a fascinating story. His family raises livestock on the ...

Look out the window - it’s snowing! Let’s go make a snowman! But hold on - what is snow? Snow is a form of precipitation, just like rain and sleet. When it is very cold, tiny ice crystals begin to ...