Bi - 1.CA.05(Strunz)
(from Germany, grown lab)
Here we have some Native bismuth ‘crystals’. They form as a ‘hopper’ type of crystal network. They have a bright metallic luster and show a beautiful iridescent rainbow play of colors. Bismuth is the last element to decay in the universe. The average life of an estimated 20 trillion years. It is equally rare in the crust than gold.
transfer your lunch money to my paypal, nerd
The raven is sometimes known as “the wolf-bird.” Ravens, like many other animals, scavenge at wolf kills, but there’s more to it than that.
Both wolves and ravens have the ability to form social attachments and they seem to have evolved over many years to form these attachments with each other, to both species’ benefit.
There are a couple of theories as to why wolves and ravens end up at the same carcasses. One is that because ravens can fly, they are better at finding carcasses than wolves are. But they can’t get to the food once they get there, because they can’t open up the carcass. So they’ll make a lot of noise, and then wolves will come and use their sharp teeth and strong jaws to make the food accessible not just to themselves, but also to the ravens.
Ravens have also been observed circling a sick elk or moose and calling out, possibly alerting wolves to an easy kill. The other theory is that ravens respond to the howls of wolves preparing to hunt (and, for that matter, to human hunters shooting guns). They find out where the wolves are going and following. Both theories may be correct.
Wolves and ravens also play. A raven will sneak up behind a wolf and yank its tail and the wolf will play back. Ravens sometimes respond to wolf howls with calls of their own, resulting in a concert of howls and calls.
Sources: Mind of the Raven, Bernd Heinrich, The American Crow and the Common Raven, Lawrence Kilham
Sand cats live in sandy, stony deserts and the only species of cat that survive without water for long period of time (couple of months). Unlike other species of cats, sand cat is poor climber and jumper but proficient digger. It digs burrows in the sand where it hides from the harsh desert sun.
Paws covered with thick fur protect the cat’s feet from the hot desert sand. This foot cushion also act like snowshoes. They prevent the cat from sinking into the sand and leaving footprints [x].
Haha, man, I only now realised the date on my drawing is wrong. It should be 10/12/’12, I forgot we’re december already.
Permission to come aboard captain?!
Welcome to the crew! How are you with heights?
Mathematics is like oxygen. If it is there, you do not notice it. If it would not be there, you realize that you cannot do without.