Four people on four continents face environmental change driven by climate change. As resources grow scarce, they witness shifts in wildlife behavior. Each actively seeks solutions to adapt and prevent conflict between humans and wildlife.Four people on four continents face environmental change driven by climate change. As resources grow scarce, they witness shifts in wildlife behavior. Each actively seeks solutions to adapt and prevent conflict between humans and wildlife.
My high school physics and science curriculum at TPT, Pearson Education, Arbor Scientific, and PhET
Tuesday, April 14, 2026
Our New World
Wednesday, May 28, 2025
PFAS: Forever Chemicals
Thursday, April 17, 2025
Secrets of the Forest
- Photosynthesis
- Trees
- Fungi
- Soil
- Insects
- Animals
- Humans
Tuesday, October 10, 2023
Ancient Earth
Witness the dramatic history of Earth, from its birth to the emergence of humanity. Dive into the most dramatic events in Earth’s 4.5-billion-year history, from its birth to the emergence of humanity. How did a hellscape of molten lava transform into a lush, green, watery planet filled with life? With dazzlingly realistic animation based on the latest research, each of these five episodes brings to life long-lost worlds that ultimately led to the one we know today.
Today, Earth is enveloped by a thin veil of gas, a narrow band of atmosphere that protects a world covered in lush green vegetation, deep blue oceans, and abundant life. But 4.5 billion years ago, Earth was a very different place: a hellscape of molten lava and barren rock, under relentless bombardment from meteors, and with no atmosphere whatsoever. So how did our familiar blue sky come to be? Breathtakingly realistic animations and a chorus of science experts reveal how the primordial inferno first gave rise to an orange-hued cauldron of toxic gasses that would be deadly to us today. Witness how the first drops of rain splashed down on the searing planet, setting the stage for the evolution of life. And discover how life itself helped create the air we all breathe today.
Cover photo: Baroness viewpoint on Floreana Island in the Galápagos, when I was there in 2008 during The Amazing Adventure 3 with James (The Amazing Randi).

700 million years ago, Earth was a giant snowball cloaked in ice from pole to pole – a global deep freeze that held the planet in a stranglehold, threatening the survival of the earliest complex life. How did life manage to hold on in this forbidding world? Leading scientists investigate how this catastrophe may have become a catalyst for life to evolve in creative new ways as it bounced back from the brink – setting the stage for the astonishing complexity we see today.
Cover photo: The pack ice in the Arctic Ocean from the M/S Origo, summer 2018.
For billions of years, life teemed in the oceans of planet Earth while the land was desolate and inhospitable. So how did life make the leap to land? Scientists explore how some of the earliest life emerged and invaded a barren, rocky landscape, eventually transforming it into a verdant, green world. Gripping visual effects reveal an alien landscape dominated by towering fungi before the arrival of plants. Witness how the first plants made landfall and partnered with fungi to create soil that would sustain them. And discover how, once life emerged on land, it fundamentally altered the very ground it grew on.
Cover photo: A riparian landscape taken while looking for jaguars in the Pantanal of Brazil's wild west, summer 2016.
252 million years ago, the most devastating mass extinction of all time abruptly wiped out around 90% of all species on Earth. The culprits were the biggest volcanic eruptions the world has ever seen, emitting some 700 thousand cubic miles of magma and rock. Volcanic gasses permeated the atmosphere and acidified the oceans while toxic gasses destroyed the ozone layer, bathing the planet in destructive UV radiation. The event–now called “The Great Dying”–came close to wiping out all life on the planet. Follow scientists as they piece together geologic evidence from the deep past and clues from today’s ecosystems to discover how life made it through and evolved into the astonishing variety we see around us today.
The story of Earth can only be told because now, 4.5 billion years into its existence, a technological and self-aware animal species roams its surface, able to study the very planet that gave rise to it. But how exactly did Earth give rise to humans? Through stunningly realistic animation, witness the cataclysmic asteroid strike that wiped out the dinosaurs, the tumultuous changing climates that allowed early primates to spread across the planet, and the geologic events that created the conditions for the evolution of an animal that walks upright on two legs. Explore the power and paradox of humanity’s profound impact on our planet, and ponder the question of how we may shape its future.
Cover photo: Newspaper Rock in southeast Utah, as I saw it in April, 2004.
Monday, June 19, 2023
Our Planet II
Thursday, May 4, 2023
Chasing Carbon Zero
NOVA ran two climate change episodes for Earth Month, 2023. Weathering the Future was discussed in a previous post. Changing Carbon Zero was the next episode in season 50 of the program.
Climate journalist, Miles O'Brien, takes us on a journey whose destination is "Net Zero" carbon. That's where we're supposed to be by 2050 to avoid a range of climate-related catastrophes. Those catastrophes are starting to show themselves here in 2023, so the need is clear.
As with Weathering the Future, this documentary doesn't waste time making the case that climate change is happening. That's settled science. It's documented elsewhere in the world of documentaries.
This program is devoted to the nuts and bolts of how we get from here to carbon zero. It's a difficult, but not impossible task. For some key carbon contributors, innovation is no longer needed. We have the tools we need. But we need to implement them.
Monday, April 24, 2023
Weathering the Future
Thursday, April 6, 2023
Big Links Pages
Friday, March 10, 2023
Earth Science: The Bundles (with Environmental Science)
Thursday, March 9, 2023
The Habitable Planet
Monday, April 13, 2020
Cosmos: A Spacetime Odyssey
National Geographic · 2014 · Presenter: Neil deGrasse Tyson
Cosmos: A Spacetime Odyssey, is a thirteen-part American science documentary television series released in 2014. The show is a follow-up to the 1980 television series Cosmos: A Personal Voyage, which was presented by Carl Sagan is considered a milestone for scientific documentaries. This series was developed to bring back the foundation of science to network television at the height of other scientific-based television series and films. The show is presented by astrophysicist Neil deGrasse Tyson, who, as a young high school student, was inspired by Sagan.
Cosmos: A Spacetime Odyssey on Teachers Pay Teachers
E P I S O D E STyson opens the episode to reflect on the importance of Sagan's original Cosmos, and the goals of this series. He introduces the viewer to the "Ship of the Imagination", the show's narrative device to explore the universe's past, present, and future. Tyson takes the viewer to show where Earth sits in the scope of the known universe, defining the Earth's "address" within the Virgo Supercluster. Tyson explains how humanity has not always seen the universe in this manner, and describes the hardships and persecution of Renaissance Italian Giordano Bruno in challenging the prevailing geocentric model held by the Catholic Church. To show Bruno's vision of the cosmic order he uses an animated adaptation of the Flammarion engraving, a 19th century illustration that has now become a common meme for the revealing of the mysteries of the Universe.
The episode continues onto the scope of time, using the concept of the Cosmic Calendar as used in the original series to provide a metaphor for this scale. The narration describes how if the Big Bang occurred on January 1, all of humankind's recorded history would be compressed into the last few seconds of the last minute on December 31. Tyson concludes the episode by recounting how Sagan inspired him as a student as well as his other contributions to the scientific community.










