Click link below!
nobody knows but probably lots
The only information there was was that his siblings were twins, and it can be deduced that they are 15-17 years younger than him (regarding Artemis as an 18y.o.)
Click on the link below and click on the picture of Artemis when you get there. A page of information will pop up. The first two paragraphs explains Artemis' family.
That information is classified!
athena,artemis, demeter, hestia, hera, aphrodite - main goddesses. there are lots more.
lots
You can find lots of information about Mount Everest and its climbers at the link given
Artemis and Butler were sent a loop through the security cameras, they discover this and that the LEP sent in the dwarf reprobate Mulch Diggums to find out the source of Artemis' information and to see if he can find Holly. A troll is sent in after that, which Butler defeats with Holly's help.
An eighth book has been said to come out, however, the release date has not yet been announced. Any information regarding this could be found in many Artemis Fowl fan-sites or the actual Artemis Fowl website.
It will show a connection to Holly and Artemis' birth. Artemis probably will develop multiple personality disorder and some how end up in fairy prison.
What does Artemis need?
The Greek goddess Artemis is a female. However, if you are referring to Artemis Fowl, Artemis Fowl is a male.