"When I started, there was poop in bags everywhere," said Ricky Ojwang, skillfully navigating a rubbish-strewn canal in Mukuru, a Nairobi slum where he's worked to improve sanitation since 2012.
Environment
Oct 11, 2019
0
91
NASA Administrator Jim Bridenstine said Thursday that a recent Twitter statement critical of SpaceX was a signal to all the space agency's contractors about realistic development timelines.
Space Exploration
Oct 11, 2019
1
44
The food delivery business, popularized by mobile online services such as Grubhub, OrderUp, and DoorDash, has become a $200 billion industry, which is expected to grow by more than 15% annually over the next five years. New ...
Economics & Business
Oct 11, 2019
0
8
From the intricate patterns of pollen grains to the logarithmic spirals of nautilus shells, biology is full of complex patterns, shapes, and geometries. Many of these intricate structures play important roles in biological ...
General Physics
Oct 11, 2019
0
89
