ewly discovered Ice Age cave art in Spain; the ancient Maya faced mercury pollution; important pre-Roman leader in Britain possibly a woman; deeply buried structure in the Nile Delta

Hundreds of Ice Age cave engravings discovered in northeastern Spain [Alternate Link]

Ancient Maya communities may have faced centuries of toxic mercury pollution [Alternate Link]

Iron Age ruler linked to Roman invasion of Britain may have been a woman [Alternate Link]

Massive ancient Egyptian structure discovered beneath 2,600 years of Nile mud [Alternate Link]