American Duo Wins Nobel Economics Prize for Work on Auctions

US economists Paul Milgrom and Robert Wilson won the Nobel Economics Prize. (AFP)
US economists Paul Milgrom and Robert Wilson won the Nobel Economics Prize. (AFP)
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American Duo Wins Nobel Economics Prize for Work on Auctions

US economists Paul Milgrom and Robert Wilson won the Nobel Economics Prize. (AFP)
US economists Paul Milgrom and Robert Wilson won the Nobel Economics Prize. (AFP)

US economists Paul Milgrom and Robert Wilson won the Nobel Economics Prize on Monday for work on commercial auctions, including for goods and services difficult to sell in traditional ways such as radio frequencies, the Nobel Committee said.

The Royal Swedish Academy of Sciences noted that the discoveries by Milgrom, 72, and Wilson, 83, "have benefitted sellers, buyers and taxpayers around the world," it said in a statement.

"Auctions affect all of us at every level. Moreover, they are becoming increasingly common and increasingly complicated," the academy said, listing examples such as flexible electricity prices set by daily auctions and countries raising funds through government bond auctions.

Milgrom and Wilson's work "gives us a better understanding of how we should design auctions," jury member Peter Fredriksson told AFP.

‘Winner's curse’
Wilson was spotlighted for developing a theory on auctions focusing on a common value, such as the future value of radio frequencies, or the rights to extract minerals in a particular area.

This common value "is uncertain beforehand but, in the end, is the same for everyone," according to the academy.

Wilson's work during 1960s and 1970s showed why bidders tended to bid under what they actually thought the good was worth.

The answer was that they feared the "winner's curse," or winning the auction but paying too much.

Milgrom then came up with a more general theory of auctions by analyzing bidding strategies in different auction forms, publishing his seminal papers around 1980.

Both professors at Stanford in the United States, Wilson was Milgrom's thesis advisor and they also live on the same street.

The academy noted that while "people have always sold things to the highest bidder," societies have also had to allocate "ever more complex objects... such as landing slots and radio frequencies" among users.

"In response, Milgrom and Wilson invented new formats for auctioning off many interrelated objects simultaneously, on behalf of a seller motivated by broad societal benefit rather than maximal revenue," the academy said.

They used their theories to create a new auction model that was put into practice by US authorities in 1994 to sell radio frequencies to telecom operators, and are applied by governments around the world in the current rollout of 5G networks.

The winners will share the prize sum of 10 million Swedish kronor (about $1.1 million, 950,000 euros).

Speaking to reporters in Stockholm via a telephone link, Wilson said the announcement had been "very happy news," conceding that despite his research focus he himself had "never participated in an auction".

However, he quickly had to retract his statement. "My wife is pointing out that we bought ski boots on eBay, I guess that was an auction," Wilson said.

David Ettinger, a professor of economics at the Paris Dauphine University, told AFP that while the word auction might conjure up images of auction houses like Sotheby's and Christie's, they are in fact ubiquitous, found in everything from online advertising to government contracts.

"Auctions have fascinated game theorists because it's rare to have applications in economic life where the terms are so clearly laid out. Negotiation is fuzzy, whereas in an auction... you make a bid and the best one wins," Ettinger said.



Study Documents Extinction Threats to World's Freshwater Species

African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
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Study Documents Extinction Threats to World's Freshwater Species

African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo

Freshwater environments cover about 1% of Earth's surface while accounting for more than 10% of known species. Like many marine and terrestrial ecosystems, however, they are in distress. A new study looking at some of the denizens of freshwater habitats offers a stark illustration of this biodiversity predicament.

Researchers assessed the status of 23,496 species of freshwater animals in groups including fishes, crustaceans such as crabs, crayfish and shrimp and insects such as dragonflies and damselflies, finding 24% of them at a high risk of extinction, Reuters reported.

"Prevalent threats include pollution, dams and water extraction, agriculture and invasive species, with overharvesting also driving extinctions," said conservationist Catherine Sayer, lead author of the study published on Wednesday in the journal Nature.

Sayer heads the freshwater biodiversity unit at the International Union for Conservation of Nature (IUCN), the organization that tracks the status of species globally.

Some of the freshwater species deemed at high risk bear exotic names such as the mini blue bee shrimp of Sulawesi, the Seychelles duskhawker dragonfly, the Atlantic helicopter damselfly of Brazil, the daisy burrowing crayfish of Arkansas and fishes such as the shortnose sucker of Oregon and California and the humpbacked mahseer of India.

The study filled a gap in data on freshwater biodiversity. The studied species were selected because their diverse positions within food webs present a holistic view of the health of freshwater ecosystems globally.

These species inhabit inland wetlands such as lakes, rivers, swamps, marshes and peatlands - areas that the researchers said have been reduced by more than a third since 1970. Other research has documented the status of mammals, birds, reptiles and amphibians that share these freshwater ecosystems and often face their own unique threats.

Of the animal groups investigated in the new study, the highest threat levels were documented in the crustaceans (30% threatened) followed by the fishes (26%) and the dragonflies and damselflies (16%).

"Freshwater ecosystems are ecologically important because of the diversity of species they support. Some of them may have high numbers of species that are restricted just to those systems - a single lake or pool or river," said Northern Arizona University freshwater conservationist Ian Harrison, a member of the IUCN Species Survival Commission and a study co-author.

"They are also important in terms of the ecosystem services they supply: carbon sequestration in terms of peat bogs; food in terms of fisheries; medicines from plants; as well as cultural and aesthetic values. Freshwater reeds are used for building houses in some areas. Freshwater ecosystems contribute $50 trillion in value annually by their provision of natural processes supporting human well-being," Harrison said.

The researchers identified four places globally with the largest number of threatened freshwater species: Lake Victoria in Africa, Lake Titicaca in South America and regions in western India and Sri Lanka.

Lake Victoria, the world's second-largest freshwater lake by surface area, is bordered by Kenya, Tanzania and Uganda. The key threats identified to species were pollution, overfishing, agriculture and invasive species, particularly the Nile perch and water hyacinth. Lake Titicaca is situated on the border between Peru and Bolivia in the Andes. It was found to face a similar cadre of threats as Lake Victoria. Both lakes boast a rich diversity of fishes.

"There is an urgent need to focus on freshwater conservation to halt the decline in species, and this can be achieved through a more integrated management of water resources that can include the maintenance of ecosystem functions within the process of addressing the obviously important human needs for water," Harrison said.

"The particular value of this study is that it shows us which river basins, lakes, et cetera, are the ones where the conservation challenges are most urgent and serious," Harrison added. "And we can compare this to what we know about existing protections, and identify where there are gaps and where there are conservation needs. And it acts as a baseline of information from which we can track progress, to see if our actions are reducing threats."