The company has been repeatedly stymied by equipment problems, regulatory hurdles, persistent sea ice and legal challenges from Alaska Natives and environmental groups.
Naturally, there are many implications and hurdles in solving this problem at one dump, let alone across several countries and cities.
Furthermore, it would help to detect problems or hurdles at an early stage and enable them to anticipate accordingly and prevent stagnation or even failure of the implementation process.
Ms. Huff acknowledges that no one "has completely solved this problem" and noted other hurdles, some of which were legal rather than technological.
Another nuclear project, proposed in Texas by NRG, was already facing financing problems and is likely to encounter further hurdles in the new environment.
Founded in 2009, Uber, whose investors include Goldman Sachs and Google, has had to overcome teething problems including legislative hurdles and opposition from traditional taxi drivers, who have brought cities such as Paris and Brussels to a standstill by blocking traffic.
All single parents face challenges, and the fathers profiled have also had to cope with hurdles like a criminal past, homelessness, health problems and the mother's death.
Most common hurdles were inability to leave household chores, pre-occupation with family problems and lack of approval from husbands.
It's not just emotional hurdles that they've had to overcome – there were some funding problems, and its initially exclusive platform, the OUYA, was discontinued last summer.
Furthermore the pilot training program allowed identifying potential technical problems, cultural and pedagogical hurdles, as well as testing educational approaches and course contents.
