Today's headlines lead with coverage of the on-going crisis in the debt markets, and an explanation of the financial engineering underlying much of the global liquidity bubble. Debt ratings have not been adjusted to reflect current market conditions, meaning that 'asset' valuations are over-stated. No institution wants to force asset sales for fear of revealing just how much real valuations differ from nominal ones, but eventually such a sale will occur - with the potential to cause an abrupt repricing of a wide range of 'assets' (many of which will actualy be revealed to be essentially worthless). Leverage will magnify the losses, leading to a very serious financial crisis. One estimate (below) puts the potential losses, once assets are eventually marked to market, at 20 times the sum involved in the LTCM crisis in 1998 - so far, and getting worse by the day.

The Round-Up is also convering the Canadian energy scene, as well as environmental and international news, in that order. Oil companies leaving Venezuela and aiming for the oil sands are finding that all is not clear sailing, while China is entering the oil sands for the first time. Nunavut seeks control over future oil and gas revenues, Newfoundland and Labrador wants to bypass Quebec in selling electricity to the US, and the slow down in natural gas drilling is hurting frontier communities in Alberta and BC.

Credit crunch will 'shred investment portfolios to ribbons'

The near collapse of two Bear Stearns hedge funds has lifted the rock on our 21st century mutant capitalism, exposing the bugs beneath to a rare shock of naked light.

When creditors led by Merrill Lynch forced a fire-sale of assets, they inadvertently revealed that up to $2 trillion of debt linked to the crumbling US sub-prime and "Alt A" property market was falsely priced on books.

Even A-rated securities fetched just 85pc of face value. B-grades fell off a cliff. The banks halted the sale before "price discovery" set off a wider chain-reaction.

"It was a cover-up," says Charles Dumas, global strategist at Lombard Street Research. He believes the banks alone have $750bn in exposure. They may have to call in loans....

....Wobbles are turning to fear. Just $3bn of the $20bn junk bonds planned for issue last week were actually sold. Lenders are refusing "covenant-lite" deals for leveraged buy-outs, especially those with "toggles" that allow debtors to pay bills with fresh bonds. Carlyle, Arcelor, MISC, and US Food Services are all shelving plans to raise money. This is how a credit crunch starts.

"This is the big one: all investment portfolios will be shredded to ribbons," said Albert Edwards, from Dresdner Kleinwort.