Bike Pollution Mask India

Did Delhi’s Air Pollution Drop 25% in 2019? What The Data Says

In September 2019, the Delhi government and Delhi Chief minister Arvind Kejriwal announced Delhi’s PM2.5 air pollution was down 25% in 2019 over the previous year. Yet there is doubt. Thewire.in expressed skepticism about this claim.     As data-driven nerds, we wanted to let the numbers answer this question. So we dug into the Delhi PM2.5 […]

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Hold on! Replacement filters cost more than buying a new air purifier?

Ever since Smart Air founder Thomas made his first DIY purifier, Smart Air has been telling the world that purifiers are needlessly overpriced. And ridiculously expensive replacement HEPA and carbon filters are one reason why. HEPA filters were invented over 70 years ago by the US government. There’s no patent, nothing fancy – they’re just […]

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