Although once he became president his discourse has become more moderate - "from words to deeds there is a long way to go", as we say in Colombia - Petro once again raised environmental demands and demands against the failed war on drugs during the United Nations General Assembly that took place in September in New York, United States.

The family of Kenneth Miguel Armijo, senior research scientist and engineer at Sandia National Laboratories, has been growing chiles in New Mexico, USA, for nearly a century. "We've been doing it even since the state was part of the Mexican territory," he says. "Chili is part of our blood."

So, taking advantage of his position as a clean energy researcher and his cultural history, Armijo found a much more sustainable way to roast the chiles: using solar energy.

Constantly encountering news about climate change can be not only discouraging, but also confusing. Although, in essence, the point of origin of the climate crisis is the rise in global temperature, it involves several chain reactions, as well as technical, economic and social concepts that not everyone is familiar with.

So how do you get people to understand the dimensions of climate change without being overwhelmed? A French organization has found a way: a card game, called Climate Fresk, in which people can learn about the main ideas of climate change and do so collaboratively in just three hours.

Due to the loss of wildlife, 60% of plants around the world are not dispersing far enough to cope with climate change. In order to move to areas more suitable for survival, plants have a key strategy: to take advantage of animals eating their fruits and swallowing some of their seeds, allowing them to develop in other regions when they are released along with the poop.

We know that in the face of the energy transition that must be achieved globally - that is, that our energy system stops relying on fossil fuels and, instead, renewable energies are promoted - a new workforce must be created. The problem is that, as the report Help Wanted, Diversity in Clean Energy, produced by six organisations close to this sector, explains, while 61% of workers are white, 16.5% are Latino and Hispanic, and only 8% are Afro. In addition, women represent only 30% of clean energy workers, even though they make up 48% of the country's workforce.

With true energy transition this picture must change, not only because the lack of diversity in the sector scares away many potential Latino workers, but because a clean energy sector with Latinos and Afro people will make it a sector that better understands its customers.

The effects of climate change are no longer understood as something that will happen in the future, but are already beginning to be felt. Since the end of the 19th century, the average global surface temperature has risen by 1.18°C, changing not only natural habitats but also human lifestyles. However, the rise in temperature, or at least its sensation, is not felt in the same way everywhere. Those living in cities and urban areas are experiencing much more extreme heat waves.

When talking about climate change, it is common to hear that the energy system is the sector most in need of urgent change. Several studies have pointed out that, worldwide, this is the sector that emits the most greenhouse gases, the main cause of global warming. But getting there is not so simple. Some studies, such as the one led by scientists from the University of California and published in Science of the Anthropocene, argue that "electrifying everything" could increase inequality.

When one thinks of mangroves, one's mind automatically flies to the tropics, to images of trees with long, powerful roots protruding from the coasts, right where freshwater meets saltwater. So when a group of scientists reported that they had found mangroves at least 170 kilometres inland on Mexico's Yucatan peninsula, many experts were surprised.

Those who have lived for a long time in southwestern North America may have noticed that, since 2020, the weather has become more intense: the temperature is higher and, conversely, rainfall is lower. In addition, during 2021, you may have felt that you were experiencing a type of drought not experienced in years.

In fact, according to a recent study published in the scientific journal Nature Climate Change and led by researchers from the Earth Observatory at Columbia University, New York, the drought that has affected this region for the past 22 years is the worst megadrought recorded in this area in the last 1,200 years.

In early December 2021, US President Joe Biden signed an executive order outlining how the country will address the climate crisis. It is a roadmap of sorts, with five specific goals to reduce greenhouse gas emissions across all federal operations, invest in clean energy industries and create healthy communities.

Instagram is one of the most popular platforms for sharing the moments of our lives. But for Isaias Hernandez, the person behind the Queer Brown Vegan account, with over 60,000 followers, it's all about empowerment.

In the face of the climate crisis, solar energy farms have been gaining popularity, which is good news. However, the dilemma with these initiatives is that they require large tracts of land to be implemented.

If there is one icon that represents the Southwestern United States, it is the saguaro cactus or, as it is known in science, Carnegiea gigantea. To think of the landscape of this region is to conjure up the image of this elongated plant that can reach 40 feet in height (almost 12 metres).

"Especially during the peak hours of both sunrise and sunset, the cactus silhouettes project a human form across the canyons and deserts, as if looking out over the horizon," says Melisa Bohlman, a volunteer at Saguaro National Park in Arizona.

Among the species of the animal world, corals could easily be classified as the most curious. Not only because at first glance it is hard to believe that they are just that, animals, but because coral reefs are home to a variety of creatures, earning them the nickname "the marine rainforests".

Currently, resources to address this problem are limited, so Dr Larrauri believes it is important to assess the risks and potential losses in order to prioritise which dams to repair first. This is an important decision. Last year alone, in June 2020, two dams failed in Michigan, forcing some 40,000 people to evacuate on an emergency basis.

When we go food shopping, whether in a local market or in a large supermarket chain, it is common to find rows and rows of colourful, juicy vegetables. But this scenario, to which we are accustomed, could be at risk.

This spring, the latest cohort of the Science, Technology, Engineering, Engineering and Mathematics Student Experiences on Ships (STEMSEAS) programme was preparing to set sail.

When a fellow hiker took a photograph of the extremely faint Manhattan skyline, which extended beyond the entrance to Long Island Sound, I thought about the financial privilege of those of us who were there.

The figure is staggering. Although indigenous people represent only 5% of the world's population, they protect up to 80% of the earth's biodiversity.