Each short-listed family was tested on initiative, stamina and team-working, as well as undergoing psychological tests to find out how they might cope with the stresses of living in a small mining community in Blaenavon.

BBC: The men had to carry coal sacks during one task

They've tested the anode and the electrolyte, but they are still working on the final piece--the battery's cathode--using this same method.

FORBES: Breakthroughs

Until this new service, SportStream has tested working with a handful of teams while pushing its own app and website since launching last June.

FORBES: With Stephen Curry On Fire, Social Media Partner SportStream Announces A New Platform

These now include working 30 hours a week, passing a criminal background check and being tested for drugs each year.

ECONOMIST: America's mixed-income experiment

Today, a Mayangna team is working with the Ministry of Education to develop pilot teacher manuals and student workbooks that are being tested in rural classrooms across the BOSAWAS Biosphere Reserve.

UNESCO: Social and Human Sciences