Karl Marx once said, “We make our own history, but not under conditions of our own choosing.” This idea applies not just to human actions, but also to the limits set by our environment. For hundreds of thousands of years, humans lived as hunter-gatherers until agriculture emerged around 11,000 years ago. This change marked the beginning of large civilizations and cities across the globe.
Climate played a big role in this transformation. A study from the Potsdam Institute for Climate Impact Research shows that the Earth’s climate has been wildly variable over the last 100,000 years, with repeated cycles of cold and warming. Climate historian William J. Burroughs notes that only when the climate stabilized did humans successfully adopt farming as a permanent way of life. This shift allowed societies to form cities, engage in trade, and build complex social structures.
Since then, we’ve entered a period known as the Holocene, characterized by relative climate stability. This era lasted from about 11,700 years ago until the 20th century, with only minor temperature fluctuations. However, we also faced challenges like droughts and storms during this time. Overall, the climate has been what some call a “Goldilocks” climate—not too hot, not too cold.
More recently, scientists have coined the term **Anthropocene** to describe our current geological epoch, marked by significant human impact on the Earth. A 2023 report outlined urgent threats to our water, food, and biodiversity. It warned that without immediate action, we could face global crises that might lead to humanitarian disasters.
In the last few decades, research has shown that human activity is pushing us past several critical environmental limits, known as **Planetary Boundaries**. This framework identifies nine crucial systems like climate change and biodiversity loss, indicating where we’re straying too far into risky territory. Alarmingly, only two of these boundaries are considered safe at the moment.
For example, atmospheric CO2 levels have surged to heights not seen in 15 million years, with current global temperatures also soaring. Reports indicate that carbon dioxide levels reached 430 ppm in July 2025. In the meantime, one million species are currently at risk of extinction, a rate 100 times higher than normal.
The report emphasizes how human actions, from deforestation to pollution, have severely damaged ecosystems. These trends not only threaten our survival but also destabilize the very systems that support human life.
Experts like John Bellamy Foster argue that we are at a critical juncture. If we continue with “business as usual,” we could face irreversible environmental degradation. He compares this to the disruptive nature of capitalism, which often fails to respect environmental limits. As he puts it, we are not simply facing separate problems; rather, we’re on the brink of a potential crisis that could irrevocably alter life on Earth.
As we look towards the future, it’s increasingly clear that we need urgent action to pull ourselves back from these dangerous edges. The time is now to take more conscious steps towards protecting our planet’s limited resources.
