Berkshire Hathaway stocks have begun to sag after trading at near record highs at the start of Warren Buffett’s 50th year at the helm.

Berkshire Hathaway chief executive Warren Buffett has revealed he has stage one prostate cancer, adding his condition was not life-threatening.

If this is the death of Wall Street as we know it, the tombstone will read: killed by complexity.

Climate change is spurring a ”worldwide economic and industrial restructuring” as more and more of the world’s largest companies seek to confront global warming, an investor…