Logo of Phnom Penh Post newspaper Phnom Penh Post - Earth Day Network wrong to link extinctions with global warming



Earth Day Network wrong to link extinctions with global warming

Content image - Phnom Penh Post
Indonesian students hold cutouts of endangered animals as they take part in an Earth Day rally in Banda Aceh on Monday. CHAIDEER MAHYUDDIN/AFP

Earth Day Network wrong to link extinctions with global warming

Monday was Earth Day, an annual event celebrated globally since 1970. Dedicated to demonstrating support for environmental protection, this year’s Earth Day was expected to include events in over 193 countries, coordinated by the Earth Day Network (EDN).

For Earth Day 2019, EDN concentrated on species extinction. That appears to be a good change from the years EDN focused on the highly debatable issue of dangerous man-made climate change.

However, EDN lists climate change as the first cause of the supposed extinction problem.

On their website, they asserted: “The unprecedented global destruction and rapid reduction of plant and wildlife populations are directly linked to causes driven by human activity: climate change, deforestation, habitat loss, trafficking and poaching, unsustainable agriculture, pollution and pesticides…”

In reality, there is no meaningful, real data to support the contention that “unprecedented global destruction and rapid reduction of plant and wildlife populations” is occurring.

Regardless, linking extinctions to the past century’s climate change makes no sense.

Despite recent claims that the Australian brown rat is the first mammal to have been killed off by human-induced climate change, not a single species has been shown to even be threatened or endangered by so-called man-made global warming.

It is estimated there are currently more than 10 million species on Earth – more than at any other time in history.

Modest global warming

New species are constantly replacing old ones. Although humans have been responsible for the extinction of some species in recent centuries, extinctions have always been an integral part of life.

A range of interrelated phenomena contribute to extinctions. They include temperature changes, habitat destruction, competition, invasive diseases, and reproductive failure.

Species are more vulnerable when there are major temperature changes over a short period, which is what most experts believe caused the end of the dinosaurs following an asteroid impact.

Some scientists are now predicting major extinctions in Southeast Asia from deforestation.

The introduction of the brown snake in Guam during World War II is thought to have eliminated a dozen bird species there.

The woolly mammoth and sabre tooth tiger became extinct in North America because their reproductive rate could not keep up with population losses.

And there is no question that human activities have contributed to extinctions as our population expanded into animal habitats.

However, none of these extinctions have had anything to do with the past century’s modest global warming, just over 1 degree Celsius since 1880, according to NASA.

Regardless, many animals, while still endangered, are recovering due to excellent conservation programmes. White tail deer, moose, blue whales, and wolves are but a few of these.

Tropical forests cover less than 12 per cent of all land, yet they contain a majority of all plant and animal species that inhabit the Earth.

The Arctic covers 10 per cent of the planet’s land area but contains only 600 plant species and only 100 species of birds, no reptiles or amphibians, and only 20 mammals.

Obviously, plants and animals thrive in warm climates.

Warming is good for life. It is cooling that should most concern us.

Climate change advocates try to circumvent the obvious connection between warm climates and biodiversity by claiming that the secondary effects of global warming, such as droughts or the melting of planetary ice, threaten life.

However, droughts are not increasing and, on a planetary scale, the ice is not melting.

If tropical conditions allow life to thrive, what conditions lead to extinctions?

In The Book of Life, SJ Gould tracks 20 mass extinctions in the geologic record. There are strong clues that each event was driven by global cooling.

Conservation organisations routinely rank species relative to their risk of extinction.

In descending order of risk, species are: critically endangered; endangered; vulnerable; near threatened; or of least concern.

Threat levels are determined by considering a wide range of factors including existing and historical populations, whether populations are increasing or decreasing, and whether habitats are being destroyed.

For example, mountain gorillas, with only 400, and hawksbill turtles (25,000) are on the critically endangered list. Snow leopards (6,000) and sea lions (50,000) are considered to be endangered.

Positive message

Most endangered species are large animals with relatively low reproductive rates.

Currently, the World Wildlife Federation (WWF) has 19 major animal species listed that are critically endangered.

All of these are threatened due to human predation and habitat destruction.

For instance, the orangutan population of 15,000 is dwindling as a result of deforestation.

None of these species are endangered by global warming, however.

The WWF has identified 27 endangered animal species all due to either hunting or habitat destruction.

In fact, Galapagos sea lions have grown from 20,000 up to 50,000 since 2002.

In the next lower category of threatened animals, the WWF lists 20 that are vulnerable, again due to hunting and habitat destruction, with one possible exception.

Al Gore warns that, due to ice melting, polar bears will soon have no place to live. But the reality is quite different – floating ice (pack ice) is not melting significantly and polar bears are thriving.

Indeed, the number of polar bears has quintupled in the past 50 years from about 5,000 to about 25,000 today.

The message to citizens who treasure our wonderful world of animals is a positive one – you have no reason to fear global warming-induced species extinction.

We should focus our efforts on protecting wildlife from real human threats, not fictitious ones.

Dr Jay Lehr is Senior Policy Analyst with the Ottawa, Canada-based International Climate Science Coalition (ICSC) and former Science Director of The Heartland Institute, which is based in Arlington Heights, Illinois, US. Tom Harris is Executive Director of ICSC.

MOST VIEWED

  • Hun Sen: Stop Russia sanctions

    Prime Minister Hun Sen said sanctions against Russia as a result of its military offensive in Ukraine should be stopped as they have produced no tangible results, and predicted that a global food crisis would ensue in 2023 as a consequence. Speaking to an audience at

  • Chinese tourists 2.0 – Coming anytime soon?

    Regional tourism is grappling with the absence of the prolific travellers and big spenders – the Chinese tourists. Cambodia, which has welcomed over two million Chinese tourists before Covid-19, is reeling from the economic loss despite being the first to fully open last November ‘To put

  • PM reflects on shoe throwing: Free speech or act of violence?

    Prime Minister Hun Sen on May 17 questioned whether a man who threw a shoe at him while he was in the US was exercising freedom of expression or if it was an act of hostility. Hun Sen was referring to an incident last week when

  • Siem Reap’s Angkor Botanical Garden opens

    The Angkor Botanical Garden was officially opened on May 19 with free entry for both local and international visitors for the first six weeks. The garden was established on a nearly 15ha plot of land in Siem Reap. “After the first six weeks, Angkor Botanical Garden

  • Pub Street on the cards for Battambang

    The Battambang Provincial Authority has announced that it is considering establishing a Pub Street in the area around the heritage buildings in Battambang town in a bid to attract more tourists. Battambang provincial governor Sok Lou told The Post that the establishment of a Pub

  • Hun Sen: Don’t react to hostility

    Prime Minister Hun Sen urged tolerance and thanked members of the Cambodian diaspora for not reacting to the hostility on display towards him by others while he was in the US to attend the May 12-13 ASEAN-US Special Summit in Washington, DC. In an audio