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Climate change could wipe out a third of parasite species, study finds

Parasites such as lice and fleas are crucial to ecosystems, scientists say, and extinctions could lead to unpredictable invasions

Climate change could wipe out a third of all parasite species on Earth, according to the most comprehensive analysis to date.

Tapeworms, roundworms, ticks, lice and fleas are feared for the diseases they cause or carry, but scientists warn that they also play a vital role in ecosystems. Major extinctions among parasites could lead to unpredictable invasions of surviving parasites into new areas, affecting wildlife and humans and making a “significant contribution” to the sixth mass extinction already under way on Earth.

Related: Earth's sixth mass extinction event under way, scientists warn

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Faced with nuclear annihilation, what would you do? My father stockpiled death pills

As one of the founders of CND, he brought me up to fear an attack – and to protest against nuclear proliferation. Given today’s increased threat, why has nuclear armageddon fallen down our list of fears

Zoe Williams: why we need the anti-nuclear movement more than ever

How did fear of nuclear holocaust fade so fast? I was brought up at a time when we thought the world would probably end before we got old. But here we still are, the people who were young in the 60s, and so are the H bombs that terrified us. If anything, we are less safe now than back in the heyday of our CND demonstrations.

My father was one of the early founders of CND: a former communist who had left the party at the time of the Hitler/Stalin pact; he launched a peace march across Europe to Hungary in the 1950s. He was by nature a millenarian, living in fear of the end of the world in one way or another – and his fears were well-grounded. I went on my first Aldermaston march at 13, after hearing him speak in Trafalgar Square. Unfortunately, as was his wont, he stopped at The Bunch of Grapes pub before the march left Belgravia, and never got any further. But I went for the whole four-day trip, and every year after that, Aldermaston was the great social event for me and my friends.

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Mars counters Trump's climate stance with $1bn sustainability plan

Confectionery firm also launches M&Ms renewable energy campaign as part of a growing corporate backlash against the US’s decision to pull out of the Paris climate deal

The corporate backlash is growing against Donald Trump’s withdrawal from the Paris climate accord, with Mars launching a $1bn sustainability plan and an M&M’s campaign centred on renewable energy.

It is the latest climate move by the family owned firm, which emerged as a vocal critic of the US president’s decision to pull out of the 2015 climate pact, saying it was “disappointed” with the withdrawal and stressing that corporations could not go it alone when it came to tackling climate change.

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Just how heavy could rain become in the warming world?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific concepts

On a very wet day we can expect 1-2 inches of rain to fall in the UK, perhaps double that in extreme conditions. But as Hurricane Harvey and other storms have shown, in warmer climes prolonged rainfall can be many times heavier. So in a warming world, just how heavy could rain become?

Jon Lucas, Bath

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CSIRO a paid-up member of Minerals Council, which fights climate change action

Science agency stands in contrast to Australia’s biggest polluter, AGL, which parted ways with MCA over climate change

The Australian government’s science agency, the CSIRO, has paid tens of thousands of dollars to peak mining lobby group the Minerals Council of Australia, which fights against government action on climate change.

The CSIRO has been listed as an “associate member” of the Minerals Council of Australia (MCA) since at least 2004 and new documents obtained by the Australian Institute, under freedom of information laws, show that in 2017 the “annual subscription” for membership was just under $10,000.

Related: Mining lobby calls for 10% limit on environmental charities' spending on advocacy

Related: Australia's shortage of climate scientists puts country at serious risk, report find

CSIRO has a long history collaborating with professional societies and bodies including industry associations. Memberships are an important part of our dialogue with a wide range of stakeholders by allowing us to build networks, share research results, collaborate on research projects, and generally help ensure the relevance and uptake of our research.

No organisation we are a member of has authority to speak or act on behalf of CSIRO. Further, as standard practice CSIRO officers must work within relevant policies to ensure our independence and impartially. For example, they cannot comment on policies of the government, opposition or any other political parties; or outside of their areas of expertise in their interactions with any industry body.

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Warming planet is hazard to fish through increased salinity and algal blooms

Prymnesium parvum has wreaked calamitous damage on angling spots in Norfolk, making it an economic and environmental threat

Many effects of global warming appear gradually but can cause sudden and devastating changes. A rise in sea levels is one; it makes estuaries and lagoons slightly more saline, which in the case of the Norfolk Broads, suddenly threatened a big attraction, angling.

This is because tiny “golden” algae called Prymnesium parvum, which thrive in slightly saline or mineral rich water, can turn toxic, suffocating the fish by destroying their gills.

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Denying Hurricane Harvey’s climate links only worsens future suffering | Dana Nuccitelli

The variables in the climate change formula are mitigation, adaptation, and suffering. Denying the problem loads up on the suffering.

Human-caused climate change amplified the damages and suffering associated with Hurricane Harvey in several different ways. First, sea level rise caused by global warming increased the storm surge and therefore the coastal inundation and flooding from the storm. Second, the warmer atmosphere holds more water vapor, which intensifies extreme precipitation events like the record-shattering rainfall associated with Harvey. Third, warmer ocean waters essentially act as hurricane fuel, which may have made Harvey more intense than it would otherwise have been.

There are other possible human factors at play about which we have less certainty. For example, it’s possible that Harvey stalled off the coast of Texas because of changes in atmospheric circulation patterns associated with human-caused global warming. As climate scientist Michael Mann notes, his research has shown that these sorts of stationary summer weather patterns tend to happen more often in a hotter world, but we can’t yet say if that happened in Harvey’s case.

I think for opportunistic media to use events like this to, without basis or support, just to simply engage in a cause and effect type of discussion, and not focus upon the needs of people, I think is misplaced.

Global warming is here and is already affecting our climate, so prevention is no longer an option. Three options remain for dealing with the crisis: mitigate, adapt, and suffer.

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Australia's east and south faces bad bushfire season after warm, dry winter

Weather experts and rural fire services warn of elevated fire risk in areas of Queensland, NSW, Victoria and SA

Most of the east coast and parts of South Australia are at high risk of bushfire after one of the warmest, driest winters on record, a national conference has warned.

Populated areas of Queensland, New South Wales, Victoria and South Australia have been marked “red” in the 2017 Southern Australia Seasonal Bushfire Outlook.

Related: Weather bureau says Australia set for a dry spring with above average temperatures

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Floods in drought season: is this the future for parts of India? | Raghu Karnad

Mumbai, Assam and other regions are used to extreme weather, but the recent flooding was not ‘normal’. The powers that be must adjust, and fast

It is possible to be killed by floods in Mumbai, but not really to be surprised by them. On 29 August, the city was battered by a monsoon storm which left homes, highways and hospital floors submerged, and shut down the commuter railway which has to carry more people every day than live in Denmark. More than 20 people are dead: swept away or crushed as multi-storey buildings collapsed. Bodies are still washing ashore.

Instead of feeling surprise, though, Mumbai treated the deluge like an unwelcome guest who keeps coming by and trashing the place. The most unnerving collective flashback was to 26 July 2005. Ferocious rainfall that day turned the city into a lethal aquatic obstacle course, which 700 people did not survive. That year’s flood, like this one, was followed by a flood of assurances from elected leaders, and civic pledges to protect waterways and mangroves, and renewed attention to how a metropolis built largely on tidal estuary and marine “reclamations” could so easily return to the water.

The storm in Mumbai deposited 15% of the city’s annual rainfall in a single day

Related: 'Not a single thing was dry': Mumbai's residents count the cost of floods

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'Daring to Doubt': Tony Abbott to address London climate sceptic group

Abbott will become the second former Australian prime minister to address the Global Warming Policy Foundation, following John Howard in 2013

Former Australian prime minister Tony Abbott is to give the annual lecture to a London-based climate sceptic group.

Abbott will give his speech, entitled Daring to Doubt, to the London-based Global Warming Policy Foundation (GWPF) on 9 October.

Related: Tony Abbott fears Finkel's clean energy target could be 'a magic pudding'

Related: Tony Abbott outlines policy 'common sense' in swipe at Turnbull

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