New Porsche bikes: make a bold statement.

Porsche's new Bike RS features a carbon fibre frame.

From September, Porsche will be expanding its Driver’s Selection bicycle range with the addition of two innovative machines, the Bike RS and the Bike S. The RS model features 29-inch wheels, a carbon fibre frame, modular monocoque construction, and a 20-speed Shimano XTR gearshift. Serious stopping power comes courtesy of latest-generation hydraulic Magura disc brakes. Price in Europe: around R60 000.

Then again, the Bike S model is hardly a slouch, It features a rigid, high-performance aluminium 7005 frame, a toothed belt drive system and 11-speed Shimano Alfine IGH gearshift.

Waste not, want not. Meet the Muncher!

Okay, so its aesthetic appeal is limited - but hey, it does the job.

Ecologico-Logic is a Nevada based company specialising in simple, environmentally friendly solutions to pressing waste disposal, agricultural and environmental problems. So far, so good. Now meet the Muncher, a large and slightly scary machine that employs aerobic digestion to reduce waste and transform the residue into saleable by-products such as liquid effluent, solid cake (no, not that kind) and carbon dioxide.

The company plans to market a variety of products and processes in its bid to transform the waste disposal industry, significantly improve agricultural productivity, and “remediate environmental pollution”. As they tell it, both the effluent and the cake are extremely effective organic fertilisers, with none of the liabilities presented by commercial chemical products. And here’s the clincher: the Muncher can also be used to perform environmental clean-ups of toxic chemicals such as PCBs, dioxins and nitrates – all without producing nasty emissions of its own.