But those envelopes are tasty...
cosmic_skillet
Yes, that is how active sonar works. The ship emits a very loud noise and listens for reflections to map out the surroundings. Sonar pings can be very loud and can damage the ears of underwater life forms.
Cereal box top redemption!
Wait, are you saying Bin Laden's propaganda isn't a good faith argument?
From the second paragraph of the article:
These remarkable findings position elephants as the first non-human animals to use a form of address that doesn’t mimic the receiver’s call, a trait previously observed in dolphins and parrots.
It appears dolphins have a "signature whistle" that they produce and other dolphins use this like a name. Sort of like if you enter a big room and yell out "Wazzup" and then everyone starts calling you Wazzup.
Elephants appear to be different, seems like they will name other elephants. Sort of like you enter a big room, the other people notice you're short and everyone starts calling you Shorty.
Yeah it's a huge effort to do large scale biochar production. The dream is to take all those waste stems they're burning and sequester the carbon in the soil. This will improve soil quality and improve air quality by stopping the burning, but it will cost big bucks.
But can I play Protoss?
Your wish is granted, you get bug eyes
Meanwhile modern teabags leach microplastics into your tea when used.