All is not well in the world just because stock markets are up – particularly when it comes to climate change.
THE CANADIAN PRESS/Frank Gunn
Don't let stock markets reports convince you that when the markets are up, all is well in the world. When the market is up, carbon dioxide in the atmosphere is up, and the global environment is down.
Droplets rising from the Champagne vent on the ocean floor in the Mariana Islands. Fluids venting from the site contain dissolved carbon dioxide.
NOAA Ocean Explorer
Thousands of years ago, carbon gases trapped on the seafloor escaped, causing drastic warming that helped end the last ice age. A scientist says climate change could cause this process to repeat.
Phytoplankton under a microscope.
Phytoplankton are tiny, but they do important work.
The exploitation of fossil fuels emits CO₂, the main cause of global warming.
The Earth’s past shows the key role of CO₂ on climate for 4.45 billion years, and how human industrial activity has disrupted its cycle at an unprecedented rate over the past 160 years.
A stand of
Miscanthus x giganteus at the University of Illinois’s Energy Farm.
Brian Stauffer/University of Illinois
In the eastern reaches of Siberia, scientists discovered plants with exceptional cold tolerance that could be the key to sustainable bioenergy production.
Drax biomass plant, Yorkshire.
The Drax biomass plant in Yorkshire is the first in the world to pioneer carbon capture and some specialists see it as it has a bright future. But hold the rosy headlines.
The Soybean Free Air Concentration Enrichment (SoyFACE) research facility at the University of Illinois, Urbana-Champaign.
Claire Benjamin/RIPE Project
Many researchers have studied the impact of carbon dioxide and heat on crop growth inside greenhouses. But what happens in the real world? One team has just done this and the results are surprising.
A better tomorrow?
Brexit may be an unexpected boon for the UK's climate leadership. Here's how the UK can seize the initiative.
AAP Image/Mick Tsikas
For the second year in a row global greenhouse emissions from fossil fuels have risen, putting 2018 on course to set a new record, according to an annual audit from the Global Carbon Project.
England’s largest woodland - Kielder Forest.
Wikimedia Commons/By The Boy that time forgot
Replanting the world's great forests should be a central demand at COP24.
The Giant Sea Bass at the California Academy of Sciences. Fishes'sense of smell is highly affected by high level of carbon dioxide in the ocean.
Increase of carbon dioxide in the ocean affects the way fish detect predators, mates or food and could threaten not only individual fish but entire populations.
Over 99 percent of today’s plastics come from oil, but new bio-based options are becoming available.
Icons by Vectors Market, Freepik and srip
One big problem with plastics is that they're largely made of petroleum. Sourcing bio-polymers from plants and bacteria has some big benefits – and the technology is starting to take off.
The renewable energy industry can also create jobs.
(David Dodge, GreenEnergyFutures.ca/flickr)
The idea of a renewable energy transition is exciting. It opens up space to think about enhancing democracy and decolonization.
An example of woody plant encroachment over Eagle-Siding in South Africa’s Eastern Cape province. D Edwards (1954) and James Puttick (2010).
Images courtesy of rePhotoSA.
Woody plants' cover has increased across large swathes of the continent in the past three decades.
Felicity Burke/The Conversation
Urban trees are literally made with the help of human breath – they turn the carbon dioxide we breathe out into the building blocks of plant growth. So your local trees have a piece of you inside them.
Technology exists to capture carbon dioxide from the atmosphere but it has a big cost.
Livestock is a significant source of methane, a potent but short-lived greenhouse gas.
New research has suggested a fresh way to account for greenhouse gases with different lifetimes in the atmosphere.
For a megacity, Tokyo is rich in trees.
In an increasingly urban world, trees can make a major difference. One study found that, for every dollar invested in planting, megacities saw a $2.50 return on their investment.
New research finds more CO₂ can actually make most plants smaller in the long-term - but the story for crops isn't so simple.
Australia will have to regulate its considerable shipping industry.
Until now, the international shipping industry has been excluded from the Paris Agreement and the Kyoto Protocol, despite its major contribution to global emissions.