Wednesday, July 1, 2020

World's largest graveyard of Dinosaurs found in South Africa

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Nikhita Gautam

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World's largest graveyard of Dinosaurs found in South Africa

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Global Views 360

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July 1, 2020

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‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town

‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town | Source: Bruce Anderson via Wikimedia

In a village in the eastern cape of South Africa lies one of the most significant dinosaur sites ever found in the world. The site was discovered when a shepherd, Dumangwe Thyobeka found a large bone on his way to his great-grandparents’ graves, in 2015. He then took the bones to a local dinosaur enthusiast, James Rhalene. Commenting on this discovery " Mr. Rhalene said, "Growing up we were told dinosaurs were a myth, I thought they were only tales our grandparents would tell around the fire at story time", and It wasn't until reading some books that I started to believe they may be real. I've been looking into the existence of dinosaurs since 1982. He added, "You can imagine my excitement at being part of this and discovering them in my own backyard. I am so proud. Books will be written about our small village; the world will come to know of us through this discovery.”

These bones are more than 200 million years old, of around the end of the Triassic era and the beginning of the Jurassic one. When the village elder, Sginyane Ralane came to know about the discovery, he reached out to universities in South Africa for looking into it. The news eventually reached Prof. Jonah Choiniere from the University of Witwatersrand in Johannesburg, and in 2018 Jonah and his colleagues started excavating the site. “It has been one of those places where you sometimes find yourself literally tripping over a dinosaur bone. There are very few other sites I've had the chance to work where we have this richness of fossils.” says Prof Paul Barett, a dinosaur expert at The Natural History Museum, UK, after he joined the team.

A reason why this area is abundant in fossils, Natural History Museum explains, is because of the ancient river systems in the area. The area is arid for most of the year now, and the rivers flow only seasonally. However, in the ancient times, there were vast river systems flowing year-round in the region, with wide, shallow rivers which would consequently form a layer of rock 210 million years old which is up to 500 meters thick in some regions. These rivers supported diverse wildlife, including ancestors of crocodiles, possibly those of turtles and mammals and fish, amphibians and reptile-like animals. The existence of such large rivers meant that dead animals nearby would be buried in sediment before they decomposed.  

This discovery is scientifically important for a number of reasons; the era from which these bones are found is a boundary in which a mass extinction occurred. Prof. Jonah is trying to understand how the animals from before that extinction survived and how they flourished after. In the Triassic era, there were multiple dominating animals, like the crocodiles, big mammal-like animals and dinosaurs. In the Jurassic era, however, the dinosaurs are clearly dominating. Why this happened is unclear, and the rocks and fossils from this site might help with that. There were also other animals along with dinosaurs in this site which make it noteworthy. Of the animals found, there were rauisuchians, which relate to modern-day crocodiles, and were dominant on land during the Triassic. The team also found cyclodonts and dicyclodonts, where the cyclodonts are the early ancestors to all mammals, and dicyclodonts are an even earlier branch of the mammalian family tree.

All of these have a significant impact on the community too; the team signed a memorandum of understanding with the local government with huge. After the signing, local officials visited the site at Qhemega. The team has been trying to use the heavy machinery they had brought for moving fossils for improving access in and to the village. They are also developing a curriculum in high schools to include topics about fossil sites and to add geography to the curriculum, to train the younger generation about the mapping used in excavation and in many other scientific fields especially relevant in the mineral-resource rich South Africa.

So far, this site has only provided benefits for everyone involved; new discoveries and confirming data for the scientific community, and economic access, increased opportunities and a matter for pride for the local community.

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February 4, 2021 5:05 PM

Yemen's Multilayered War: The Failing Healthcare Infrastructure

This is the 6th and last part of a short explainer article series on the current crisis in Yemen. To read the earlier parts of the series click on the link.

To read the 1st part of the series click on the link.

To read the 2nd part of the series click on the link.

To read the 3rd part of the series click on the link.

To read the 4th part of the series click on the link.

To read the 5th part of the series click on the link.

The civil war in Yemen, more so after 2015 has taken a toll on the civic infrastructure of the already fragile and poor country. Among these, the healthcare infrastructure of the country was one of the worst affected.

Apart from the physical damage to the hospitals and clinics due to the aerial bombings by the Saudi Arabia led coalition, the naval blockades exacerbated the dire situation. In June 2015 itself, aid agencies warned of the humanitarian risks brought by the US and UK-backed Saudi blockades.

The humanitarian situation aggravated further as there was a consistent famine since 2016 and Yemen was dependent on foreign aid for feeding almost 80% of its population.  According to UNICEF reports, over 3.3 million children and pregnant or lactating women suffer from acute malnutrition.

In 2017, the World Food Programme estimated that an additional 3.2 million people would be pushed into hunger. If left untreated, 150,000 malnourished children could die within the coming months.

Save the Children, the international charity and aid agency, estimated that 85,000 children under the age of five have starved to death in between 2015 to 2018.

Major healthcare operatives are dying due to the active bombing and conflict in Yemen, including personnel from MSF and United Nations Office for Coordination of Humanitarian Affairs (OCHO).

The MSF (or Doctors Without Borders), who have been in Yemen since 2007, have reported that fears of stigmatization are causing people to stay away from hospitals, with misinformation and lack of medical services only compounding the healthcare issue during the pandemic.

As of 24th July, the country reports 1640 confirmed infections and 458 related deaths.  Al Jazeera reported that “Cemeteries in Aden are overflowing with graves, suggesting that the number of people killed by the new coronavirus is higher than the official count.” Yemen and its related aid agencies also suffer from lack of PPEs and adequate information about the pandemic.

As of April 2020, there are 800,000 internally displaced persons in just one province of Yemen Marib. The number of verified civilian deaths stands at 7,700.

The United Nations has been continually asking for donations, but has failed to collect as much as it requires. While it collected $4 billion last year, it has only received $700 million, halfway into 2020.

The UN urged for $2.4 billion this year to fight the humanitarian crises and the Coronavirus. As of 2nd June, 29 countries and the European Commission pledged a total of $1.35 billion to support humanitarian efforts in Yemen, just over half of the amount needed to sustain programs through the end of this year.

In April 2020, the Saudi deputy defence minister, Prince Khalid bin Salman, said Saudi Arabia “will contribute $500m to the UN humanitarian relief program for Yemen in 2020, and an additional $25m to help combat the pandemic. It is up to Houthis to put the health and safety of the Yemeni people above all else.”

There are 41 major UN programmes in Yemen, and it is estimated that more than 30 of them will close due to lack of funds. The UN stated, “Due to the COVID-19 suppression measures, all integrated outreach activities, which include the Expanded Programme on Immunization, Integrated Management of Childhood Illness, Maternal and Newborn Health,and nutrition activities, were suspended.”

Most of Yemen's 3,500 medical facilities have been damaged or destroyed in air strikes, and only half are thought to be fully functioning. Officials warn that monetary relief may not be enough to assist in the war against the pandemic alongside the Civil War. A solution to the war must be found soon, before the pandemic eviscerates more of the healthcare infrastructure.

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