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Climate change – Analysis and Comment

Natural Resources Minister Jonathan Wilkinson is overhauling a methane-reduction program after a scathing report from Canada’s environment commissioner. THE CANADIAN PRESS/Justin Tang

Canada praised for climate leadership despite scathing watchdog report on climate-policy failures

As one of the few countries to have enshrined net-zero into law, Canada has earned praise for its climate leadership. Yet an independent report calls out its continued failures to reduce emissions.
One ‘mechanical tree’ is about 1,000 times faster at removing carbon dioxide from air than a natural tree. The first is to start operating in Arizona in 2022. Illustration via Arizona State University

These machines scrub greenhouse gases from the air – an inventor of direct air capture technology shows how it works

Klaus Lackner is finding new ways to cut the technology’s high costs and energy demand, and he’s about to launch the first ‘mechanical tree’.
A woman wades through mud to collect items from her home in San Pedro Sula, Honduras. The devastation brought by hurricanes Eta and Iota in Honduras in November 2020 contributed to a sharp rise in northward migration. (AP Photo/Moises Castillo)

Environmental disasters are fuelling migration — here’s why international law must recognize climate refugees

International refugee law must be overhauled to consider climate change and include “deadly environments” as a form of persecution.
A Bohemian waxwing eating mountain ash berries. Lisa Hupp, USFWS/Flickr

With fewer animals to spread their seeds, plants could have trouble adapting to climate change

Forests around the world will need to shift their ranges to adapt to climate change. But many trees and plants rely on animals to spread their seeds widely, and those partners are declining.
A tropical storm’s rain overwhelmed a dam in Thailand and caused widespread flooding in late September. It was just one of 2021’s disasters. Chaiwat Subprasom/SOPA Images/LightRocket via Getty Images

Ocean heat is at record levels, with major consequences

While surface temperatures were about the 6th warmest on record in 2021, the upper oceans were at their hottest – and they’re a stronger indicator of global warming. A top climate scientist explains.
Darren England/AAP

‘Disappointment and disbelief’ after Morrison government vetoes research into student climate activism’

Addressing urgent and complex problems such as climate change involves research across the full spectrum of society – and that includes Australia’s young people.