With millions of years’ evolution, plants have developed a variety of ballistic dispersal structures for seeds. One example is the catapult of an Oxalis sp., which can realize a consecutive
In 1951, Adelbert Ames created the mind-boggling ‘Ames Window’. It’s so effective that even when you know how it works you can’t break the illusion.…
Volcanoes blow smoke rings and they do it rarely, because they require such precise conditions to form. This is the amazing series of rings produced by Mt Etna on April
