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Balloon release laws

May 27, 2024 By EarthWise Leave a Comment

Banning the release of balloons

The Florida state legislature has recently passed a law that bans the intentional release of helium balloons outdoors.  It is a rare example of a bipartisan piece of legislation.  Florida is joining six other states that have already enacted balloon restricting laws.

Balloons released into the sky don’t just disappear into the ether.  They often end up in oceans and waterways and the thin material that remains is 32 times more likely to kill seabirds than other types of plastic debris.  Aquatic animals often mistake balloons for jellyfish and fill up on them.   Balloons tied up with ribbons entangle turtles and manatees.  Even grazing cows have died from ingesting balloons.  Balloons contribute to microplastic pollution, which is a growing problem for all living things, including humans.

Other states with balloon release laws are Connecticut, Tennessee, New York, Texas, California, and Virginia.  Details of the laws vary.  They carve out exceptions for specific applications.  They exempt small children.  Some limit the quantity of balloon release.  Others require balloons to be weighted down to prevent them from rising too high.  California’s legislation is aimed at the metallized mylar balloons that have shorted out high-tension electrical wires and triggered wildfires.

The Florida law equates intentionally releasing a lighter-than-air balloon with littering.  It’s a non-criminal offense that carries a fine of $150.

People enjoy releasing helium balloons, particularly en masse.  The spectacle has become part of weddings, gender reveal parties, and even funerals.  But the practice has serious environmental repercussions, and its restriction is being pursued by more and more states and municipalities.

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Up, Up and Not OK: Letting Go of Balloons Could Soon Be Illegal in Florida

Photo, posted August 16, 2022, courtesy of Ryan Mandelbaum via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Superstrong Nanofibers | Earth Wise

March 5, 2021 By EarthWise Leave a Comment

MIT research team has developed superstrong nanofibers

Self-assembly is a ubiquitous process in the natural world that leads to the formation of the DNA double helix, the creation of cell membranes, and to many other structures.   Scientists and engineers have been working to design new molecules that assemble themselves in water for the purpose of making nanostructures for biomedical applications such as drug delivery or tissue engineering.  For the most part, the materials created in this way have been chemically unstable and tended to degrade rapidly, especially when the water is removed.

A team at MIT recently published a paper describing a new class of small molecules they have designed that spontaneously assemble into nanoribbons with unprecedented strength and that retain their structure outside of water.

The material is modeled after a cell membrane.  Its outer part is hydrophilic (it likes to be in water) and its inner part is hydrophobic (it tries to avoid water.)  This configuration drives the self-assembly to create a specific nanostructure and by choosing the appropriate chemicals to form the structures, the result was nanoribbons in the form of long threads that could be dried and handled.  The resultant material in many ways resembles Kevlar.   In particular, the threads could hold 200 times their own weight and have extraordinarily high surface areas.  The fibers are stronger than steel and the high surface-to-mass ratio offers promise for miniaturizing technologies for such applications as pulling heavy-metal contaminants out of water and for use in electronic devices and batteries.

The goal of the research is to tune the internal state of matter to create exceptionally strong molecular nanostructures.  The potential for important new applications is considerable and exciting.

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Researchers construct molecular nanofibers that are stronger than steel

Photo, posted June 19, 2007, courtesy of Andrew Hitchcock via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

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