These green blobs are chloroplasts - in this instance packed inside the cells of a moss leaf and magnified around 400 times - upon which our collective future depends. Using only energy from sunlight, water and carbon dioxide from the atmosphere, they produce the oxygen we breathe, control the climate by removing carbon dioxide from the atmosphere and, directly or indirectly via plants and animals, produce all the food we eat. Currently 6.3 billion of us depend on them for our survival. By 2050 9 billion of us will need their services. Maximum respect for plants, then..... and, more precisely (see Psi Wavefunction's comment), chlorophyll, in all of its manefestations, wherever it occurs
