First the researchers chose a region known for its relatively constant winds. (sciencemag.org)
Very tall buildings, for example over 20 stories tall, are subject to virtually constant wind. (liveroof.com)
If you're wondering about global trade physically slowing down, due to efforts to reduce fuel consumption and emissions from container ships, the point - to - point speed today is not that much different than the fastest clipper ships — assuming constant wind of course. (treehugger.com)