Vol. 155 No. 17

SCIENCE

Cheetahs On The Run (Biodiversity / Heroes For The Planet)
LAURIE MARKER

All The Days Of The Earth (Man And Nature)
Why protecting the environment means saving ourselves

Condition Critical (State Of The Planet)
An exclusive look at a U.N. assessment of Earth's ecosystems shows they are strained to the limit

A Global Challenge For The New Century (State Of The Planet)
The President tells why the U.S. must help lead all nations to a greener future

How To Prevent A Meltdown (Climate)
Answers to global warming are in the wind

Vanishing Before Our Eyes (Biodiversity)
Not since an asteroid smacked Earth 65 million years ago have animal and plant species died out so fast. We have no idea what we're losing.

Extinctions Past And Present (Biodiversity)
Famous for finding fossils of early humans, the author took up the cause of conservation. Here he champions a global fund for wildlife.

Cry Of The Ancient Mariner (Oceans)
Even in the middle of the deep blue sea, the albatross feels the hard hand of humanity

Guardian Of Paradise (Oceans / Heroes For The Planet)
NOAH IDECHONG

Enemies Of Waste (Climate / Heroes For The Planet)
AMORY AND HUNTER LOVINS

Nature's Gifts: The Hidden Medicine Chest (Biodiversity)

SOCIETY

The Big Crunch (Population)
Birthrates are falling, but it may be a half-century before the number of people--and their impact--reaches a peak

Asphalt Jungle (Sprawl)
A global land rush is gobbling up the space and resources needed for agriculture and wildlife. Only the cockroaches are thrilled.

Saving The Planet Starts At Home (Activism)
Half a billion of you will help salute Earth Day 2000. Here are ways to lend a hand on the morning after.

Speaking Her Mind (Population / Heroes For The Planet)
NIRMALA PALSAMY

Valuable Lessons (Activism / Heroes For The Planet)
BRIAN STASZENSKI

TECHNOLOGY

Why Mother Nature Should Love Cyberspace (The Internet)
Working, reading and shopping online will save fuel and preserve forests

ALSO IN THIS ISSUE

Unleash the Rivers (Freshwater)
Dams are responsible for some of the worst environmental tragedies in history. We're starting at last to take some down.

Taking The Long View (Reflections)
Space travel gave us a new look at Earth. Now we need a new sense of time.

To Our Readers

Handcuffed Cop (Freshwater / Heroes For The Planet)
RON GATTO

SPECIAL SECTION

Star Power Lights The Way (Celebrity Heroes For The Planet)
As an Earth Day headliner, Leo joins a legion of highly visible eco-advocates

A Global Green Deal (The Future)
The bad news is that we have to change our ways--and fast. Here's the good news: it could be a hugely profitable enterprise.

A Princely Pioneer (Heroes For The Planet)
The campaigns against urban sprawl and genetic engineering get a royal boost

Get Wise To Global Warming (Celebrity Heroes For The Planet)

PEOPLE

A Century Of Heroes (A Century Of Heroes)