Public health policy can differ dramatically between countries, as we saw during the Covid-19 pandemic before the vaccines saved the day. Australia and New Zealand went for a vision zero approach trying to avoid all infections; several Asian countries (pre-warned as they narrowly escaped a SARS pandemic in 2002/03) also took drastic measures to keep infections down.
Six elements are crucial for the existence of all life on our planet, namely carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Of these six, phosphorus is by far the most limited in its general availability.