Showing posts with label planet. Show all posts
Showing posts with label planet. Show all posts

Tuesday, March 17, 2020

Covid-19 2020-03-17 Daily Maverick, Covid-19: Planet Earth fights back

I found this article about what is happening to Planet Earth due to the Covid-19 Virus. I hope it will be useful to you.

https://www.dailymaverick.co.za/opinionista/2020-03-17-covid-19-planet-earth-fights-back/

Opinionista Swati Thiyagarajan 17 March 2020

Covid-19: Planet Earth fights back


https://www.dailymaverick.co.za/wp-content/uploads/Opinionista-Thiyagarajan-CovidEarthTW-480x480.jpg

Swati Thiyagarajan


Swati Thiyagarajan is an environment journalist, works at Sea Change Project and is consulting environment editor at New Delhi TV, NDTV.

The flip side to Covid-19 is first the understanding that we are not invincible and are just another species on this planet. That the world is round and a crisis in one place can become a crisis in every place. That we are only as strong as our most vulnerable people, and systems put in place to ruthlessly maximise profit while minimising humanity will always lead to disaster.



Patient zero has been around for a while. She is breathless, severely dehydrated, her lungs are compromised, her immunity is compromised, she has a raging high fever with occasional chills. She is 4.5 billion years old and she lived in relative health for 99% of that time. Then this really ghastly virus called the agricultural, and then the industrialised human came along, and she’s been sick pretty ever since.

She, unlike us, self-heals. Over her very long life, she has created life, destroyed it and changed it in order to do only one thing – survive. Her self-healing now, has shut us down. All our arrogance of technological advancement, hyper-capitalism, space travel – and we may as well be hunter-gatherers living in a cave facing down a pride of hungry lions with no weapons, in the face of Covid-19.

A zoonotic disease, it’s not the first and certainly will not be the last. From rabies, to anthrax, to HIV/AIDS, the bubonic plague, the various coronaviruses like Sars, Mers and so on, all zoonotic and all due to our relentless exploitation of the planet and her resources.

While it is not yet clear exactly from which animal this Covid-19 virus originated, it is absolutely fact that it is from a wild animal, poached and trapped against its will, kept and consumed in unhygienic conditions. The original virus could have started in a bat and perhaps came to us through the pangolin, the most trafficked animal on earth. The illegal wildlife trade is worth multiple billions of dollars and scant attention and resources have been allocated to fight it. Poaching has pushed tens of thousands of species to the brink while sanctioned legal development is pushing habitats to the brink. This dangerous combination of both habitat and species loss is exacerbating climate change which in turn is causing damage to our ability to survive as a species.

Biodiversity, or the variety of species in a living ecosystem, is the immune system of the planet. Take the human body. Our bodies have more bacteria than human cells. These microorganisms help keep us alive and healthy. For the human body, the gut or the stomach plus intestines are the most crucial part of our immune system. The greater the biodiversity – or different types of good bacteria in our guts – the better our health and immune response. If an external agent attacks, it’s the immune system that fights it off. Similarly, for planet Earth, it’s her biodiversity that is the immune system. When we, with our exploitative activities, cause issues like climate change, she can cope if her biodiversity stays intact. But we are riddling her precious immune system with holes which adds to the growing ravages of climate change.

This collapse is also forcing people and the wild into closer proximity and forcing poor communities who are hit hardest to turn to poaching and bushmeat and wet markets to supplement their food requirements. It’s easy to point fingers at poor African communities over AIDS and Ebola, and at the Chinese over wet markets and illegal wildlife trade, but unless we acknowledge we are all culpable in this mess, we are in big trouble.

This virus has already forced social isolation on us. We are unable to hug our parents, kiss our grandparents, hold our children. Basic everyday needs that keep us human, that keep us together as a community. There are people dying without being held by their loved ones at the very end. If there are real scars leftover from Covid-19, it would be this. That someone we loved died without a last loving human touch from the person who mattered the most to them.

Biodiversity also is a system of checks and balances. If there are certain species that are prey, there are certain that are predators. If there are species that are parasites, there are also species that feed on them. As biodiversity dwindles, these checks and balances go haywire. Let’s say there’s a herd of deer in the wild. Several predators keep the deer from multiplying too fast and devouring the habitat. The deer also stay alert, fast, fit because of all the running and alertness required to evade the predators. The predators also target the weak, the slow, the sick, keeping the deer population healthy. Without them, the deer will grow in number, out-eat their survivability and get sick.

Sounds familiar? What we do when we get hold of animals is crowd them up, keep them in unhygienic conditions, feed them the wrong foods and sometimes artificially keep them healthy with antibiotics. This has led to a cascade of diseases in humans, adds to making us antibiotic-resistant and then throws up a deadly zoonotic which brings us to our knees.

As omnivores, we pretty much eat anything. While zoonotic diseases come from eating meat raised or housed in unhygienic conditions, it’s not meat per se that’s the problem. It’s factory-farmed meat and illegal wild meat. Both plant-based agriculture and meat farms in the industrialised age cause extensive habitat damage leading to biodiversity loss.

The flip side to Covid-19 is firstly the understanding that we are not invincible and are just another species on this planet. That the world is round and a crisis in one place can become a crisis in every place. That we are only as strong as our most vulnerable people, and systems put in place to ruthlessly maximise profit while minimising humanity will always lead to disaster. Meanwhile, between social distancing, lack of travel and drop in manufacturing and consumption, emissions have dropped, China has seen a blue sky after years, serious concerns are being raised around the wildlife trade and patient zero is feeling better.

If we choose to live on this planet like a breeding prey species that devours like a predator while functioning like a parasite, we will force our host to react more virulently. Hers is an ancient biological intelligence that has powered life for four billion years, It’s honed, it’s extensive and it is a cold intelligence that will do what it takes to survive. As we race to find a vaccine to help us survive viruses, so is she, patient zero, looking for solutions.

If we choose to find the best parts of ourselves, where in lockdown an Italian neighbourhood sang to one another, where young people are going door to door asking older people if they need help in running errands, where the Chinese flew out a whole plane full of experts and helpers and ventilators to Italy, where we learn to live with greater compassion for each other and the living planet, we can hope to cope with and perhaps even thrive in the coming decades.

As the Chinese wrote on their help package, “we are all waves in the same ocean”. DM

Thursday, July 23, 2015

NASA, 2015-05-23 - NASA, NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth

http://www.nasa.gov/press-release/nasa-kepler-mission-discovers-bigger-older-cousin-to-earth

July 23, 2015
15-156

NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth


NASA's Kepler mission has confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star. This discovery and the introduction of 11 other new small habitable zone candidate planets mark another milestone in the journey to finding another “Earth.”

The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone -- the area around a star where liquid water could pool on the surface of an orbiting planet -- of a G2-type star, like our sun. The confirmation of Kepler-452b brings the total number of confirmed planets to 1,030.

"On the 20th anniversary year of the discovery that proved other suns host planets, the Kepler exoplanet explorer has discovered a planet and star which most closely resemble the Earth and our Sun," said John Grunsfeld, associate administrator of NASA’s Science Mission Directorate at the agency’s headquarters in Washington. “This exciting result brings us one step closer to finding an Earth 2.0."

Kepler-452b is 60 percent larger in diameter than Earth and is considered a super-Earth-size planet. While its mass and composition are not yet determined, previous research suggests that planets the size of Kepler-452b have a good chance of being rocky.

While Kepler-452b is larger than Earth, its 385-day orbit is only 5 percent longer. The planet is 5 percent farther from its parent star Kepler-452 than Earth is from the Sun. Kepler-452 is 6 billion years old, 1.5 billion years older than our sun, has the same temperature, and is 20 percent brighter and has a diameter 10 percent larger.

“We can think of Kepler-452b as an older, bigger cousin to Earth, providing an opportunity to understand and reflect upon Earth’s evolving environment," said Jon Jenkins, Kepler data analysis lead at NASA's Ames Research Center in Moffett Field, California, who led the team that discovered Kepler-452b. "It’s awe-inspiring to consider that this planet has spent 6 billion years in the habitable zone of its star; longer than Earth. That’s substantial opportunity for life to arise, should all the necessary ingredients and conditions for life exist on this planet.”

To help confirm the finding and better determine the properties of the Kepler-452 system, the team conducted ground-based observations at the University of Texas at Austin's McDonald Observatory, the Fred Lawrence Whipple Observatory on Mt. Hopkins, Arizona, and the W. M. Keck Observatory atop Mauna Kea in Hawaii. These measurements were key for the researchers to confirm the planetary nature of Kepler-452b, to refine the size and brightness of its host star and to better pin down the size of the planet and its orbit.

The Kepler-452 system is located 1,400 light-years away in the constellation Cygnus. The research paper reporting this finding has been accepted for publication in The Astronomical Journal.

In addition to confirming Kepler-452b, the Kepler team has increased the number of new exoplanet candidates by 521 from their analysis of observations conducted from May 2009 to May 2013, raising the number of planet candidates detected by the Kepler mission to 4,696. Candidates require follow-up observations and analysis to verify they are actual planets.

Twelve of the new planet candidates have diameters between one to two times that of Earth, and orbit in their star's habitable zone. Of these, nine orbit stars that are similar to our sun in size and temperature.

“We've been able to fully automate our process of identifying planet candidates, which means we can finally assess every transit signal in the entire Kepler dataset quickly and uniformly,” said Jeff Coughlin, Kepler scientist at the SETI Institute in Mountain View, California, who led the analysis of a new candidate catalog. “This gives astronomers a statistically sound population of planet candidates to accurately determine the number of small, possibly rocky planets like Earth in our Milky Way galaxy.”

These findings, presented in the seventh Kepler Candidate Catalog, will be submitted for publication in the Astrophysical Journal. These findings are derived from data publicly available on the NASA Exoplanet Archive.

Scientists now are producing the last catalog based on the original Kepler mission’s four-year data set. The final analysis will be conducted using sophisticated software that is increasingly sensitive to the tiny telltale signatures of Earth-size planets.

Ames manages the Kepler and K2 missions for NASA’s Science Mission Directorate. NASA's Jet Propulsion Laboratory in Pasadena, California, managed Kepler mission development. Ball Aerospace & Technologies Corporation operates the flight system with support from the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder.

For more information about the Kepler mission, visit:

http://www.nasa.gov/kepler

A related feature story about other potentially habitable planets is online at: http://www.nasa.gov/jpl/finding-another-earth

-end-

Kepler-452b and Earth
This artist's concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger in diameter.
Credits: NASA/JPL-Caltech/T. Pyle

Scale of Kepler-452b System
This size and scale of the Kepler-452 system compared alongside the Kepler-186 system and the solar system. Kepler-186 is a miniature solar system that would fit entirely inside the orbit of Mercury.
Credits: NASA/JPL-CalTech/R. Hurt

Kepler Planet Candidates July 2015
There are 4,696 planet candidates now known with the release of the seventh Kepler planet candidate catalog - an increase of 521 since the release of the previous catalog in January 2015.
Credits: NASA/W. Stenzel

Twelve Small Habitable Zone Kepler Planets
Since Kepler launched in 2009, twelve planets less than twice the size of Earth have been discovered in the habitable zones of their stars.
Credits: NASA/N. Batalha and W. Stenzel

Kepler-452 in space
This artist's concept depicts one possible appearance of the planet Kepler-452b, the first near-Earth-size world to be found in the habitable zone of star that is similar to our sun.
Credits: NASA/JPL-Caltech/T. Pyle