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Showing posts from June, 2020

COVID-19 leaves Venetian canals pristine: A beautiful illusion ?

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Venetian waters run clear for the first time in 60 years In April, the world was marvelling at the images of swans, dolphins, dense shoals of fish, jellyfish and even the occasional octopus, recolonising the Venetian canals, taking advantage of humankind retreating behind close doors. It seemed that there was a silver lining to the pandemic: As one observer noted, “What a marvel this Venice was. This virus brought something….beautiful.” There were precious few reasons to be cheerful during the pandemic as the world went into lockdown, people fought for their lives in hospitals around the world and economies were paralysed but the sight of nature recolonising our empty cities was heart-warming. Wildlife needed only the smallest respite from humankind to re-establish itself. Before the Coronavirus pandemic, Venice faced serious problems including flooding, unsustainable over-tourism, the sinking of historical buildings into the water and a dwindling population. Now, this crisis is promp

UK's National Grid goes coal-free for the longest period since the Industrial Revolution

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Coal has not been used to generate power for 60 days Partly due to a collapse in demand during the Coranavirus lockdown and a greater emphasis on using solar power, the UK National Grid managed to take coal plants off the network on April 10th and to avoid bringing them back online in Britain since. Britain continues to phase it out, with two of Britain’s oldest coal-fired power stations having closed at the end of March this year, leaving just three left on the mainland. This is a major shift from 10 years ago when 40% of the nation's energy came from coal and only 3% came from renewables such as wind and solar power. In 2020, the UK has the biggest offshore wind industry in the world, with the 659MW Walney Extension the world’s biggest operational offshore wind farm to date. Located in the Irish Sea near Cumbria and covering an area equal to 20,000 football pitches, it is designed to operate for 25 years and supplies enough electricity to power 590,000 UK homes. Over

Seeing the wood for the trees in carbon offsetting

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Operation Arch of Fire combatting illegal logging in Brazil Companies are falling over themselves to offer their customers ways of contributing to cutting carbon emissions with good intent, offering them easy, “tick-box” options at the end of their on-line purchases to participate. But are these schemes any good ? How can the consumer be assured of the benefits of the scheme they have implicitly signed up to ?  A major part of the problem is that the majority of carbon offsetting projects require a long-term investment which needs to be protected for its lifetime if it is to deliver all the benefits promised when first initiated.  Worldwide tree-planting schemes are an excellent example of how good intentions can go astray.  An endangered Mogno tree in Brazil will have to stand for 25 years, in good health, to sequester 275 Kg of carbon dioxide. It must be protected against illegal logging, disease and land clearing, often in remote sites where the indigenous pe