TED-Ed | How did feathers evolve? - Carl Zimmer

Dinosaurs are a diverse group of animals. They first appeared during the Triassic period, approximately 230 million years ago, and were the dominant terrestrial vertebrates for 135 million years, from the beginning of the Jurassic (about 201 million years ago) until the end of the Cretaceous (66 million years ago), when the CretaceousâPaleogene ext ... Continue reading »

publishing others pictures when permission is known to be refused

  A fellow blogger has published a photo of a lady in Iran whilst admitting to the fact that he had to take the picture covertly as she would not have given him permission to take it and certainly will not have given him permission to post it on the internet. So when I asked th photographer if he had a problem with this- his reply was that:   'You ... Continue reading »