ShutterstockBrent crude has fallen below a key threshold of $70 per barrel, and analysts expect it to fall further.Falling oil prices lessen the odds of a US recession, market veteran Ed Yardeni said.He notes that cheaper energy reduces cost burdens in manufacturing, construction, and agriculture.Oil prices are on the retreat, a welcome sight for those anxious about a US downturn.Brent crude, the international benchmark, dropped as low as $68.78 a barrel on Tuesday.