"The patent system in the USA is so distorted it's now more lucrative for companies known as 'patent trolls' to sue manufacturers rather than actually make anything. The problem's so serious that President Obama has got involved -- and British companies are targeted if they do business in the US. Rory Cellan-Jones investigates and finds one of the world's biggest trolls in his lair in Dallas."

Patently Absurd is available to stream for the next six days (the BBC never took me up on the offer for a new hard drive).

Pink Skull Rabbit by Jeremy Fish, photographed in the nick of time as it is now gone.

Two of my very own cheek cells, painlessly extracted with a cotton swab and then stained with methylene blue.

1,920 frames taken every 45 seconds and stitched together into a single photo. It's a single frame time lapse of 24 hours.

Barclays just got fined $453m for manipulating the electricity market in the US, following a £290m fine for fiddling Libor while HSBC is off money laundering with seeming impunity.

A $453m fine for Barclays is equivalent to $600 for the average US household, although if the average US household got caught manipulating markets they'd probably be in jail.

These relatively small fines aren't enough to really change behavior.

Unless we change how the fines are used. Put $453m in an incubator that funds banking startups and you can have 40 scrappy well funded companies trying to take the banks down. A handful of those will succeed and really do some damage. Every time a bank misbehaves it will be sowing the seeds of its own destruction.

Previously