Archives for March, 2020
Electric vehicles (“EV’s”) are commonly thought of as low/zero emission saviours of the planet. They are not. China has the world’s largest EV market, and some of the dirtiest coal-fired power plants. In effect, EV’s in China are much more polluting than petrol- and diesel-powered vehicles. In fact, it is…
Energy return on investment (“EROI” or “EROEI”) is a measure of the surplus energy to that required to produce the energy. A high EROI provides society with abundant, low-cost energy. This in turn allows the development and sustenance of complex industrial societies. A low EROI provides a restricted amount of…
The nitrogen group elements are group 15 of the periodic table. They comprise nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi) and muscovium (Mc). The last element has only been prepared synthetically. This group includes two of the three elements most important to plant life: nitrogen and phosphorus…
A shift to 100% renewable (wind and PV) energy is considered by many to be a necessary move to ensure sustainability of our current society. However, there are many hurdles to that goal being realised. This note will consider just one – the extraordinary amount of additional copper supply that…