Oranges in the Snow

A Starter level Oxford Bookworms Library graded reader. Written for Learners of English by Phillip Burrows and Mark Foster.
'Everything's ready now. We can do the experiment,' says your assistant Joe.
You are the famous scientist Mary Durie working in a laboratory in Alaska. When you discover something very new and valuable, other people want to try to steal your idea – can you stop them before they escape?