An investigation reveals Colorado's oil and gas regulator has allowed major companies like Chevron, Oxy, and Civitas to avoid billions in cleanup costs for defunct sites, potentially leaving taxpayers liable.
This article examines Vladimir Demikhov, a Soviet surgeon who conducted controversial two-headed dog experiments between 1954 and the early 1960s, grafting the head and upper body of smaller dogs onto larger hosts. While most animals survived only days, Demikhov also performed pioneering heart and lung transplants (1946), orthotopic heart transplants (1951), and coronary artery bypass surgery (1953). His work influenced Christiaan Barnard's 1967 human heart transplant, though he received little recognition during his lifetime, only becoming a professor in 1998, the year he died at 82.
