The apps that can tell you if you’re buying sustainably

Image credit - Lars Plougmann, licensed under CC BY-SA 2.0

By Emily Waterfield What does sustainable shopping look like? From environmental impact to workers’ rights, the term can cover so many aspects that buying sustainably can be a daunting task. But a new app that helps people select supermarket products by ethical preferences and an online database that brings transparency to supply chains aim to … Read more

Age and foaming: how to predict when a volcano will erupt

Image credit - Jimmy McIntyre, licensed under CC BY-SA 2.0

The eruption of a volcano can have devastating consequences – killing people and destroying livelihoods, as well as releasing vast amounts of ash into the sky that disrupts air travel and alters the climate. Knowing what goes on underground, however, would facilitate better warnings for when an eruption will occur – and help save lives while … Read more

Our top 10 science facts from 2018

Image credit - Horizon

By Jack Cowls From arsenic candies to underground winter forest fires, Horizon uncovered some fascinating facts while researching our articles. Here are our ten favourites from 2018. 1. Sleep-deprived brains may be asleep and awake at the same time. 2. Sea anemone sting cells accelerate faster than bullets. 3. Prehistoric caves were chosen for their echoes. 4. The outermost part of the … Read more

Drones and satellite imaging to make forest protection pay

Image credit - lubasi, licensed under CC BY-SA 2.0

Every year 7 million hectares of forest are cut down, chipping away at the 485 gigatonnes of carbon dioxide (CO2) stored in trees around the world, but low-cost drones and new satellite imaging could soon protect these carbon stocks and help developing countries get paid for protecting their trees. ‘If you can measure the biomass you can … Read more

Arctic permafrost might contain ‘sleeping giant’ of world’s carbon emissions

Image credit - Prof. Igor Semiletov.

As temperatures rise in the Arctic, permafrost, or frozen ground, is thawing. As it does, greenhouse gases trapped within it are being released into the atmosphere in the form of carbon dioxide and methane, leading to previously underestimated problems with ocean acidification and potential mercury poisoning. About one quarter of the region is covered in permafrost, which … Read more

Governments at COP24 should focus on building a global electricity grid – Prof. Damien Ernst

Image credit - Kenueone, licensed under CC0 1.0

Governments at the COP24 climate change conference in Katowice, Poland, which ends on 14 December, should tackle fossil-fuel reliance by building a global energy grid that connects renewable energy from all around the world – and the best place to start is with a giant wind farm in Greenland, says Professor Damien Ernst, an energy scientist from … Read more