... doyen of the new Malthusianism Paul Ehrlich curiously did not mention Malthus at all in his 1968 book The population bomb, and that other key writers in the period similarly made little direct reference to Malthus, for all that their arguments were restatements of Malthus principal theses...

... the application of convolutional neural networks to detect vocalisations of target species in spectrogram: a) Koala (male bellow), b) Yellow-bellied Glider ( shriek and gurgle c) Powerful Owl (male and female hoot, hoot ) and d) Sooty Owl ( falling bomb Click each spectrogram to listen to call (online only...