News / Science & Technology

Fossilized Bees Reveal Climate Changes

Fossilized Bees Reveal Climate Changesi
X
George Putic
June 26, 2014 9:33 PM
Fossils from California’s La Brea Tar Pits help scientists study the region’s past. Ancient animals, from mammoths to tiny insects, reveal facts about climate changes during the last Ice Age and help scientists understand the modern climate. VOA’s George Putic reports.
George Putic

Fossils from California’s La Brea Tar Pits keep supplying scientists with excellent material for studying the region’s past. Ancient animals, from mammoths to tiny insects, reveal facts about climate changes during the last Ice Age and help scientists understand the modern climate.

For millennia, natural tar that seeped from the ground in what is now southern California trapped large and small animals, preserving their fossils and providing scientists with a trove of specimens suitable for study.

Anna Holden, a researcher at the Page Museum in Los Angeles, is analyzing fossilized bees to learn about the ancient environment of the tar pits. In trying to reconstruct what the climate and local habitat were like, she said, “this bee offered kind of unprecedented information."

By exposing the fossils to a micro CT scanner, scientists discovered that the bee’s habitat was warmer than expected. They concluded that at the end of the Ice Age, about 11,500 years ago, this area was not covered with snow and ice, as previously thought.

Insects’ limited range – unlike that of the large mammals that came to La Brea from South America or across the land bridge now covered by the Bering Strait – allows the collection of detailed information about their immediate environment, Holden said.

“Insects have very specific life cycles, so they're just really good paleoecological indicators,” she said. “In other words, they're just very specific in their behavior, their habitats.”

Whoever collected the specimens in the 1970s did a good job of keeping records, Holden said. Comparing that data with current findings can reveal something about our future.

“Understanding past climate change is understanding current climate change,” she said. “Climate change is a big issue right now and insects are often really good indicators.”

Holden said her work may help today’s farmers fight the problem of collapsing bee populations, by switching over to bee species better adapted for the changing climate.

You May Like

Koreas Mark 61st Anniversary of War Armistice

Muted observances on both sides of heavily-armed Demilitarized Zone that separates two decades-long enemies More

Judge Declares Washington DC Ban on Public Handguns Unconstitutional

Ruling overturns capital city's prohibition on carrying guns in pubic More

Pricey Hepatitis C Drug Draws Criticism

Activists are using the International AIDS Conference to criticize drug companies for charging high prices for life-saving therapies More

This forum has been closed.
Comment Sorting
Comments
     
by: 1worldnow from: Earth
June 27, 2014 1:55 AM
This is how 'real' scientists research and analyse information! This was the original approach by non-extremists scientists before the global-warming-nazis took over and abandoned the scientific method. Thanks to people like Al Gore (manbearpig), the scientific establishment was set back 1,000 years! Good thing he had all those big jets and 5mpg SUV's to carry him around to talk about how exhausts are causing the problems. Oh yeah, and cow's farting! There's no doubt that what we do, or don't do, will have an effect on our climate and ecosystem, duh! Welcome back scientists, we've missed you!

PS: If you see Al Gore, don't say 'hello', his vision is based on popularity.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Students in Business for Themselvesi
X
Mike O'Sullivan
July 26, 2014 11:04 AM
They're only high school students, but they are making accessories for shoes, fabricating backpacks and doing product photography - all through their own businesses. It's the result of a partnership between a non-profit organization that teaches entrepreneurship and their schools. VOA's Mike O'Sullivan and Deyane Moses met the budding entrepreneurs near Los Angeles.
Video

Video Students in Business for Themselves

They're only high school students, but they are making accessories for shoes, fabricating backpacks and doing product photography - all through their own businesses. It's the result of a partnership between a non-profit organization that teaches entrepreneurship and their schools. VOA's Mike O'Sullivan and Deyane Moses met the budding entrepreneurs near Los Angeles.
Video

Video Astronauts Train in Underwater Lab

In the world’s only underwater laboratory, four U.S. astronauts train for a planned visit to an asteroid. The lab - called Aquarius- is located five kilometers off Key Largo, in southern Florida. Living in close quarters and making excursions only into the surrounding ocean, they try to simulate the daily routine of a crew that will someday travel to collect samples of a rock orbiting far away from earth. VOA’s George Putic has more.
Video

Video Not Even Monks Spared From Thailand’s Junta-Backed Morality Push

With Thailand’s military government firmly in control after May’s bloodless coup, authorities are carrying out plans they say are aimed at restoring discipline, morality and patriotism to all Thais. The measures include a crackdown on illegal gambling, education reforms to promote students’ moral development, and a new 24-hour phone hotline for citizens to report misbehaving monks. Steve Sandford reports from Bangkok.
Video

Video Virtual Program Teaches Farming Skills

In a fast-changing world beset by unpredictable climate conditions, farmers cannot afford to ignore new technology. Researchers in Australia are developing an online virtual world program to share information about climate change and more sustainable farming techniques for sugar cane growers. As VOA's Zlatica Hoke reports, the idea is to create a wider support network for farmers.
Video

Video Airline Expert: Missile will Show Signature on Debris

The debris field from Malaysia Airlines Flight 17 is spread over a 21-kilometer radius in eastern Ukraine. It is expected to take investigators months to sort through the airplane pieces to learn about the missile that brought down the jetliner and who fired it. VOAs Carolyn Presutti explains how this work will be done.
Video

Video Treatment for Childhood Epilepsy Heats up Medical Marijuana Debate

In the United States, marijuana is classed as an illegal drug by the federal government. But nearly half the states have legalized it, to some degree. Proponents say some strains of marijuana might have exceptional health benefits, for treating pain or inflammation in chronic conditions such as cancer, multiple sclerosis and epilepsy. Shelley Schlender reports on a strain of medical marijuana developed in Colorado that is reputed to reduce seizures in childhood epilepsy
Video

Video Airbus Adds Metal 3D Printed Parts to New Jets

By the end of this year, European aircraft manufacturing consortium Airbus plans to deliver the first of its new, extra-wide-body passenger jets, the A350-XWB. Among other technological innovations, the new plane will also incorporate metal parts made in a 3-D printer. VOA's George Putic has more.
Video

Video AIDS Conference Welcomes Exciting Developments in HIV Treatment, Prevention

Significant strides have been made in recent years toward the treatment and prevention of HIV, the virus that causes AIDS. This year, at the International AIDS Conference, the AIDS community welcomed progress on a new pill that may prevent transmission of the deadly virus. VOA’s Anita Powell reports from Melbourne, Australia.
Video

Video IAEA: Iran Turns its Enriched Uranium Into Less Harmful Form

Iran has converted its stockpiles of enriched uranium into a less dangerous form that is more difficult to use for nuclear weapons, according to the United Nations’ Atomic Energy Agency. The move complies with an interim deal reached with Western powers on Iran's nuclear program last year, in exchange for easing of sanctions. Henry Ridgwell reports for VOA from London.

AppleAndroid