Science Against Man - edited by Anthony Cheetham. An original anthology - all stories new to this 1970 edition. I am amazed at the number and quality of top-flight authors in this anthology from an editor who later made his name in British SF publishing.

(Introduction)
"The Lost Continent" by Norman Spinrad
"In the Beginning" by Robert Silverberg
"The Hunter at His Ease" by Brian Aldiss
"Man's Estate" by Paul Ableman
"Harold Wilson at the Cosmic Cocktail Party" by Bob Shaw
"Statistician's Day" by James Blish
"The Invisible Idiot" by John Brunner
"Small Mouth, Bad Taste" by Piers Anthony
"The Ever Branching Tree" by Harry Harrison
"Sea Wolves" by Michael Moorcock
"The Penultimate Trip" by Andrew Travers