That is staggering! I dread to think of how many times a day I use Google, just going through my own Recent History, produces pages of evidence of my searches. It is so easy and not having to move away from the computer to the other end of the room for a book to check a Latin name or looking for an ID.
I really never even considered the energy used in searches - I just thought using the computer was a certain amount and it didn't alter. So much for thinking I was very aware of my own environmental impact