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One of Musk’s favorite words—and concepts—was “hardcore.” He used it to describe the workplace culture he wanted when he founded Zip2, and he would use it almost thirty years later when he upended the nurturing culture at Twitter. As the Model S production line ramped up, he spelled out his creed in a quintessential email to employees, titled “Ultra hardcore.” It read, “Please prepare yourself for a level of intensity that is greater than anything most of you have experienced before. Revolutionizing industries is not for the faint of heart.”

Elon Musk

Walter Isaacson

We’re looking for extraordinary entrepreneurs who can create very large businesses. After eighteen years and backing over one hundred entrepreneurs, I’ve learned it’s a rare person who has the combination of attributes to get through the challenges of a startup and create a large company that changes our lives.”

Tren Griffin - A Dozen Lessons for Entrepreneurs

2017, Columbia University Press

Photosynthesis is energized by the absorption of light by pigments in the thylakoid membranes inside bacterial and plant chloroplasts (the cellular organelles that give plants their green color). The energy efficiency of the conversion of simple inorganic inputs into new phytomass is surprisingly low. Introductory textbooks often outline the entire process in a simple equation in which the reaction of six molecules of CO2 and six molecules of water produces one molecule of glucose and six molecules of oxygen: 6CO2 + 6H2O = C6H12O6 + 6O2. The reality is vastly more complex. The key sequential steps were revealed for the first time in 1948 by Melvin Calvin (1911–1997) and his co-workers (Calvin received the 1961 Nobel Prize for Chemistry for this discovery). Most importantly, the process entails not only carbon fixation and oxygen evolution, but is also the complex exchange of oxygen and CO2 in two, closely related, cycles (the other being photorespiration).

Energy

Vaclav Smil

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