Have you had "The Talk" with your kids and grandkids?

Ignore the cement -- fossil fuel carbon emissions are a perfect correlate to consumption (depletion). Image via Wikipedia

The Talk is in essence a constantly updated survey of the state of the planet through a hydrocarbon geologist's eyes. It plows methodically through reams of energy-geek data. World Conventional Oil and Oil Sands Reserves, 1980–2007. Energy Profit Ratio for Liquid Hydrocarbons. Canadian Gas Deliverability Scenarios from All Sources. The small-font notes at the bottom of each PowerPoint slide enumerate sources that read like a general anaesthetic in print form: BP Statistical Review of World Energy, Proceedings of the National Academy of Sciences, EIA International Energy Outlook. Pie charts and bar graphs with several rainbows' worth of colour and an overabundance of italicized and all-capped words: "The absolute first priority," that kind of thing. (By the way, it should be "to reduce energy consumption as soon as possible.")

The Talk is all kinds of policy-wonky. Your eyes could glaze over. You could even miss the two slides Dave always says are the only ones you must remember. The first is a single-line graph depicting "World Per Capita Annual Primary Energy Consumption by Fuel 1850–2007," which climbs by 761 percent over its 157-year timeline and flips from 82 percent renewable biomass (mostly wood) at the 1850 end to 89 percent non-renewables (almost entirely fossil fuels) at the 2007 end. The second critical slide has three line graphs in horizontal sequence, all tracking curves that begin in 1850, around the time humanity started drilling for oil in a serious way, and then spiking impossibly high at the right-hand, 2007 termini of their X axes. Global population today: 5.3 times global population in 1850. Per capita energy consumption today: 8.6 times that of 1850. Total energy consumption today: 45 times 1850's.

You could also miss the way these figures resonate with The Talk's voluminous data on oil and natural gas and coal reserves. You could miss how our current trajectory obliges us to rely on hydrocarbons for 86 percent of our projected primary energy needs in 2030, and how that fits with the strong case Hughes makes that the global hydrocarbon peak (the point at which global energy supply will begin an irrevocable decline, making the energy price shocks of the past couple of years start to look like the good old days) is estimated to occur nine years before that date.

Here’s the upshot: if you plan to drive a car or heat a house or light a room in 2030, The Talk is telling you your options will be limited, to say the least. Even if you’re convinced climate change is UN-sponsored hysteria or every last puff of greenhouse gas will soon be buried forever a mile underground or ducks look their best choking on tar sands tailings, Dave Hughes is saying your way of life is over. Not because of the clouds of smoke, you understand, but because we’re running out of what makes them.