Duke Energy agreed to buy Progress Energy for $13.7 billion in stock, creating the largest U.S. power company in terms of market value and generating capacity.
DuPont said on Sunday it will buy Danish food ingredients and enzymes firm Danisco for $5.8 billion to boost its position in the fast-growing food sector.
Genzyme shares rose more than 3 percent after Sanofi-Aventis confirmed the companies were in direct talks about a takeover deal.
Playboy founder Hugh Hefner is taking the company private.
When shopping for a deal, stick to countries with good governance, according to this paper.