June 14, 2024 Breaking News, Latest News, and Videos

EarthTalk:

Dear EarthTalk: How are populations of the world’s orca whales faring these days? Are we still in danger of losing them all in the wild?

The largest member of the dolphin family and a major draw at marine parks, orcas (also known as “killer whales”) are highly intelligent and social marine mammals that, because of these traits, have come to be known as ambassadors for nature and marine ecosystems around the world.

But the fact that people love orcas—most of us ever see them in captivity—has no bearing on how well they are thriving in the wild. Many of their habits are still a mystery to science, as the great black and white creatures, which can grow to 26 feet and weight six tons, are fast-moving and difficult to track (they are the most widely distributed mammals on Earth, besides humans).

Given this uncertainty, the International Union for the Conservation of Nature (IUCN), a nonprofit group that maintains a frequently updated global list (the so-called “Red List”) of endangered and threatened wildlife, merely lists the status of orcas as “data deficient.” IUCN is currently involved in an assessment of orca populations around the world to determine what their status should be.

Orcas may not have a clear-cut conservation status internationally, but the U.S. government is concerned enough about the animals that ply the waters of Washington’s Puget Sound and San Juan Islands (known as the “southern residents”) to put them on the federal endangered species list. Chief among threats to orcas there is loss of food supply, mostly West Coast salmon populations destroyed by hydroelectric dams and other human encroachment. Habitat loss, chemical pollution, captures for marine mammal parks and conflicts with fisheries have also each played roles in the decline of the Northwest’s orcas.

According to the National Marine Fisheries Service, an arm of the federal National Oceanic and Atmospheric Administration, the southern resident orca population—the best studied wild animal population in the world—has fluctuated considerably since researchers began studying it in earnest some three decades ago. In 1974 the group was comprised of 71 whales, but then spiked to 97 animals by 1996. But since then the population fell below 80 and has remained around that level ever since.

Due to their voracious appetites and their place at the top of the ocean food chain, orcas are very susceptible to pollution and chemicals and suffer from diseases and reproductive disorders accordingly. For this reason many scientists consider orcas an “indicator species” regarding the health of marine ecosystems in general. That is, if orcas are in decline, the rest of the ocean is likely in big trouble, too.

Of course, increased concern about the health of marine ecosystems in recent years is good news for orcas, which are dependent on a wide range of fish and marine mammals for sustenance. The preponderance of protected stretches of both ocean and coasts gives orcas a boost in their struggle to stay one step ahead of extinction. If world leaders continue to value marine ecosystems and limit the extraction of seafood species and contamination by pollutants, killer whales will have a fighting chance to keep on as icons of the sea—and those of us onshore and bobbing on boats will continue to be delighted and amazed by them.

* * * *

Dear EarthTalk: Since Obama took office, have any new incentives been put in place for homeowners looking to increase energy efficiency and reduce the overall environmental footprints of their homes?

In fact, yes. Homeowners can get up to $1,500 back from the federal government for any number of energy efficiency upgrades at home. If you upgrade to energy efficient insulation, windows, doors, heating, air conditioning or water heaters between January 1, 2009 and December 31, 2010, you are eligible for a tax credits of up to 30 percent of product costs.

The credit is capped at $1,500 combined; meaning it only applies to $5,000 in total costs. More details are available at the website of the Tax Incentives Assistance Project, a coalition of public interest nonprofit groups, government agencies and other organizations focused on energy efficiency.

Of course, the Obama administration is also thinking long term, and would like to leave its mark in furthering efforts to wean ourselves off foreign oil and increase our production and use of homegrown clean renewable energy. In light of such priorities, tax credits are also available for 30 percent of the cost—with no upper limit—on the installation of renewable energy equipment at home, such as geothermal heat pumps, solar panels, solar hot water heaters, small wind energy systems and fuel cells.

Homeowners won’t get the money back when they initially pay for equipment or upgrades, but they can add the credit amount to their overall tax refund, or deduct it from what they owe, when filing their federal income tax forms at the end of the year. Unlike tax deductions, which merely lower the total amount of taxable income, tax credits reduce dollar-for-dollar the amount of tax owed.

Homeowners should know that they can also get federally backed mortgages to pay for a variety of energy efficiency measures, including renewable energy technologies, on their new or existing homes. The federal government supports these loans by insuring them through the Federal Housing Authority or Veterans Affairs programs, allowing borrowers who might otherwise not qualify to pursue upgrades, and securing lending institutions against loan default.

Don’t own a home? Depending upon make and model, you can get between $250 and $3,400 back from the federal government for buying or leasing a new hybrid or high efficiency diesel automobile. And the automakers themselves—through their own “Automotive Stimulus Plan”—are giving consumers up to $4,500 back on the purchase of a new or used vehicle that gets gas mileage of at least two miles per gallon better than their old model.

A number of new energy-efficiency incentives are also available at the state level across the country. The Database of State Incentives for Renewable Energy website provides up-to-date listings of what may be available in your neck of the woods. With so much encouragement, how could you not want to go green?

in News
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