Two people walk their bicycles along a flooded street on the waterfront of Fort Lauderdale, Fla., as Hurricane Irma passes through on Sept. 10, 2017.
THE CANADIAN PRESS/Paul Chiasson
Machines using giant fans and filters can literally suck carbon dioxide out of the air. Sounds great – but the technology faces many challenges.
Global fossil fuel emissions dropped by about seven per cent in 2020 compared with 2019. But a rebound is likely to occur when lockdowns ease up unless COVID-19 recovery packages focus on ‘green recovery.’
(AP Photo/Michael Probst)
Several countries have made pledges to reduce their greenhouse gas emissions to zero by mid-century. But new research finds the remaining carbon budget will be depleted before we get there.
Fluorescence images of Crocosphaera.
Mar Benavides
Mar Benavides, Institut de recherche pour le développement (IRD)
In the ocean, phytoplankton helped by diazotrophs play an outstanding role in withdrawing CO₂ from the atmosphere. But climate change is disturbing this delicate balance.
Tim Breitbarth, Swinburne University of Technology; Adam Karg, Swinburne University of Technology e Kasey Symons, Swinburne University of Technology
A person who exercises, attends sporting events as a spectator and takes their kids to the oval or swimming pool will create 935 kg of CO₂ per year if using their car.
The pandemic, along with other recent trends such as the shift towards clean energy, have placed us at a crossroad: the choices we make today can change the course of global emissions.
Good ventilation can reduce the risk of catching coronavirus. An environmental engineer explains how to know if enough outside air is getting into a room and what to do if ventilation is bad.
Weathering of rocks like these basalt formations in Idaho triggers chemical processes that remove carbon dioxide from the air.
Matthew Dillon/Flickr
To avoid global warming on a catastrophic scale, nations need to reduce emissions and find ways to pull carbon from the air. One promising solution: spreading rock dust on farm fields.
As the world warmed from the last ice age, a rise in carbon dioxide levels stalled for nearly 2,000 years. That’s always puzzled scientists, but now they think they know what happened.
If we had not altered the composition of the atmosphere at all through emitting greenhouse gases, particulate matter and ozone-destroying chemicals, the average temperature would have remained stable.