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For eco-conscious city dwellers, urban agriculture is one road to real impact

Eco-consciousness is a hot trend. It’s become common occurrence to see shoppers with reusable grocery totes at the supermarket. Bamboo straws are flying off shelves as people opt for eco-friendly products. Urban gardening and composting, too, has taken root as consumers try to minimize their carbon footprints.

These small actions are encouraging first steps, but they’re not enough when it comes to tackling agricultural contributions to climate change. Strong-worded warnings from the UN’s Intergovernmental Panel on Climate Change (IPCC) detail the potential for climate disasters to worsen if modern consumption patterns don’t change — and soon.

There’s evidence that reimagining urban environments’ food systems might help reduce carbon emissions. With more than 60% of the global population expected to live in cities by 2030, urban agriculture might be one piece of the puzzle for reducing strain on city resources. The practice typically involves growing food in smaller, city environments such as on rooftops, apartment balconies, or even walls.

Destroying nuclear waste to create clean energy? It can be done

If not for long-term radioactive waste, then nuclear power would be the ultimate “green” energy. The alternative to uranium is thorium, a radioactive ore whose natural decay is responsible for half of our geothermal energy, which we think of as “green energy.” More than 20 years of research at the European Centre for Nuclear Research (CERN), the birthplace of the internet and where Higgs boson was discovered, demonstrate that thorium could become a radically disruptive source of clean energy providing bountiful electricity any place and at any time.

Coal and gas remain by far the largest sources of electricity worldwide, threatening our climate equilibrium. Non-fossil alternatives, such as solar power, use up a forbidding amount of land, even in sunny California, plus the decommissioning will pose a serious recycling challenge within 20 years. Solar is best used on an individual household basis, rather than centralized plants. Wind requires an even larger surface area than solar.

As Michael Shellenberger, a Time magazine “Hero of the Environment”, recently wrote: “Had California and Germany invested $680 billion into nuclear power plants instead of renewables like solar and wind farms, the two would already be generating 100% or more of their electricity from clean energy sources.” Correct, but the disturbing issue of long-term nuclear waste produced by conventional, uranium based, nuclear plants still remains.

How algae could sustainably reduce the carbon dioxide concentration in the atmosphere

In collaboration with fellow researchers, chemists at the Technical University of Munich (TUM) have developed a process that, according to initial calculations, can facilitate economically removing the greenhouse gas carbon dioxide from the atmosphere. The latest World Climate Report (IPCC Special Report on Global Warming of 1.5 ° C) acknowledges the global relevance of the process.

The Wonders and Worries of ‘Extinct Animal’ Zoos

The future is both glorious and horrifying. As we continue to expand our technological footprint in the hopes of creating wonder, several issues remain fixed with a trajectory towards disaster. From climate change to the mass extinction of several animal species, there’s no doubt that we’re heading into ruin if we’re to keep this up.


As our technology continues to advance to the point of bringing the dead back to life, how will our own species react to a growing new population of animals that can die and live again?

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