The United Nations’ (UN) International Day for the Preservation of the Ozone Layer is celebrated on September 16 every year. This event commemorates the date of the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987.

What Do People Do?

On this day primary and secondary school educators throughout the world organize classroom activities that focus on topics related to the ozone layer, climate change and ozone depletion. Some teachers use educational packages from the UN Environment Programme (UNEP) that have been specifically tailored to address topics about the Earth’s ozone layer.

Other activities that are organized by different community groups, individuals, schools and local organizations across the world include: the promotion of ozone-friendly products; special programs and events on saving the ozone layer; the distribution of the UNEP’s public awareness posters to be used for events centered on the International Day for the Preservation of the Ozone Layer; and the distribution of awards to those who worked hard to protect the Earth’s ozone layer.

Background

In 1987 representatives from 24 countries met in Montreal and announced to the world that it was time to stop destroying the ozone layer. In so doing, these countries committed themselves, via the Montreal Protocol on Substances that Deplete the Ozone Layer, to rid the world of substances that threaten the ozone layer.

On December 19, 1994, the UN General Assembly proclaimed September 16 to be the International Day for the Preservation of the Ozone Layer, commemorating the date when the Montreal Protocol on Substances that Deplete the Ozone Layer was signed in 1987. The day was first celebrated on September 16, 1995.

People hunted giant sloths in the center of South America around 23,120 years ago, researchers say — a find that adds to evidence that humans reached South America well before Clovis hunters roamed North America roughly 13,000 years ago.

Evidence of people’s presence at Santa Elina rock shelter, located in a forested part of eastern Brazil, so long ago raises questions about how people first entered South America. Early settlers may have floated down the Pacific Coast in canoes before heading 2,000 kilometers east to the remote rock shelter, or they might have taken an inland route from North America, archaeologist Denis Vialou of the National Museum of Natural History in Paris and his colleagues report in the August Antiquity. Other South American sites reportedly occupied by Stone Age humans lie much closer to the coast than Santa Elina does.

The night of 22 to 23 August 1791, in Santo Domingo (today Haiti and the Dominican Republic) saw the beginning of the uprising that would play a crucial role in the abolition of the transatlantic slave trade.

International Day for the Remembrance of the Slave Trade and its Abolition is intended to inscribe the tragedy of the slave trade in the memory of all peoples. In accordance with the goals of the intercultural project “The Slave Route”, it should offer an opportunity for collective consideration of the historic causes, the methods and the consequences of this tragedy, and for an analysis of the interactions to which it has given rise between Africa, Europe, the Americas and the Caribbean.

The Director-General of UNESCO invites the Ministers of Culture of all Member States to organize events every year on that date, involving the entire population of their country and in particular young people, educators, artists and intellectuals.

International Day for the Remembrance of the Slave Trade and its Abolition was first celebrated in a number of countries, in particular in Haiti (23 August 1998) and Goree in Senegal (23 August 1999). Cultural events and debates too were organized. The year 2001 saw the participation of the Mulhouse Textile Museum in France in the form of a workshop for fabrics called “Indiennes de Traite” (a type of calico) which served as currency for the exchange of slaves in the seventeenth and eighteenth centuries.

A team of archaeologists from ANU has uncovered a vast trading network which operated in Vietnam from around 4,500 years ago up until around 3,000 years ago.

A new study shows a number of settlements along the Mekong Delta region of Southern Vietnam were part of a sophisticated scheme where large volumes of items were manufactured and circulated over hundreds of kilometres.

Lead researcher Dr Catherine Frieman School of the ANU School of Archaeology and Anthropology said the discovery significantly changes what was known about early Vietnamese culture.

“We knew some artifacts were being moved around but this shows evidence for a major trade network that also included specialist tool-makers and technological knowledge. It’s a whole different ball game,” Dr Frieman said.

“This isn’t a case of people producing a couple of extra items on top of what they need. It’s a major operation.”

The discovery was made after Dr Frieman, an expert in ancient stone tools, was brought in to look at a collection of stone items found by researchers at a site called Rach Nui in Southern Vietnam.

Dr Frieman found a sandstone grinding stone used to make tools such as axe heads out of stone believed to come from a quarry located over 80 kilometres away in the upper reaches of the Dong Nai River valley.

“The Rach Nui region had no stone resources. So the people must have been importing the stone and working it to produce the artifacts,” she said.

“People were becoming experts in stone tool making even though they live no-where near the source of any stone.”

Dr Phillip Piper of the ANU School of Archaeology and Anthropology, an expert in Vietnamese archaeology, is working to map the transition from hunting and gathering to farming across Southeast Asia.

“Vietnam has an amazing archaeological record with a number of settlements and sites that provide significant information on the complex pathways from foraging to farming in the region” Dr Piper said.

“In southern Vietnam, there are numerous archaeological sites of the Neolithic period that are relatively close together, and that demonstrate considerable variation in material culture, methods of settlement construction and subsistence.

“This suggests that communities that established settlements along the various tributaries and on the coast during this period rapidly developed their own social, cultural and economic trajectories.

“Various complex trading networks emerged between these communities, some of which resulted in the movements of materials and manufacturing ideas over quite long distances”

The research has been published in the journal Antiquity.

as reported per Australian National University