Month: October 1991
Pulse of the Planet Daily Audio
ENDANGERED SPECIES
Should there be a criteria for whether or not a species is worth preserving?
October 30, 1991MOUNTAIN LIONS
When people drive mountain lions out of their traditional territories, the loss of a predator has a ripple effect on all the remaining species.
October 29, 1991OCEAN BOTTOM – Diversity
Beneath the surface of the ocean lives a variety of life that rivals the most populous rainforests.
October 28, 1991BIRDS, HAWAIIAN FOREST
Over the centuries, birds in Hawaii’s tropical rainforest adapted to their volcanic surroundings. But the introduction of non-native species threw the bird population out of balance.
October 25, 1991EAGLES – A Symbolic Comeback
Bald Eagles, once on the verge of extinction, are not just symbols of our country. They also represent the need to protect the environment, and the wildlife that depends on it.
October 24, 1991ACID RAIN – The City
What is acid rain and what happens when it falls in urban areas?
October 23, 1991ACID RAIN
Monuments that have stood for thousands of years now face a new environmental threat.
October 22, 1991VALUE OF THE RAINFOREST – Renewable Resources
Scientists seeking to save the rainforests are now learning what native Amazonians have known all along: carefully managed, a forest can yield a multitude of profitable and renewable crops.
October 21, 1991VALUE OF THE RAINFOREST
Rainforests the world over are being cut down for timber or cattle pastures. But scientists have found that in the long run, the the forests are worth more if left standing.
October 18, 1991DOLPHINS
Major tuna companies recently agreed to stop buying fish caught with driftnets that harm dolphins. However, dolphins won’t be safe until their entire environment is protected.
October 17, 1991CENTRAL PARK RESTORATION
Some parts of New York City were meant to be wild. Keeping them natural takes a lot of work.
October 16, 1991NEPAL 2 – The Culture Factor
Environmental projects in other countries often fall to the customs of indigenous people.
October 15, 1991NEPAL – Deforestation
Deforestation in the Himalayas has been responsible for a vicious cycle of erosion and flooding.
October 14, 1991RECYCLING 3 – Glassphalt
New York City’s Great White Way may indeed sparkle at night–thanks to recycled glass.
October 11, 1991ECOLOGICAL ENGINEERING – Biological Filters
It may be possible to make polluted water as pure as a mountain stream, with a cleansing system that uses plants and fish.
October 10, 1991ECOLOGICAL ENGINEERING
Ecological engineering sees any form of waste as a resource out of place.
October 9, 1991GREAT LAKES – Water Quality
One-fifth of all the freshwater in the world is contained in the Great Lakes — but that’s not enough to wash away the effects of years of pollution.
October 8, 1991GREAT LAKES – Aquatic Invaders
When ships enter the Great Lakes, they often bring with them underwater stowaways that can take over their new environment.
October 7, 1991THAI REFORESTATION
In Thailand, a village is attempting to revive land left barren by deforestation.
October 4, 1991RAINFOREST – Fragmentation
Slowly but surely,the Amazon is turning into a patchwork of barren and forested land . How much room does a rainforest and its inhabitants need in order to survive?
October 3, 1991RAINFOREST – Benefits
The Amazonian rainforest is so vast, and so rich in species, scientists say that if that if its destruction continues, we may never know how much we’ve lost.
October 2, 1991RAINFOREST -Diversity
As many as ninety percent of all the species in the world may live in rainforests.
October 1, 1991EAGLES – DDT
The effects of toxic chemicals continue to haunt the environment.