Algen auf dem Meeresboden
12.04.2024

Ensuring responsible research on ocean-based CO2 removal

Attention to ocean-based carbon dioxide removal (CDR) methods is growing fast. While many questions, including environmental and social risks, still need to be assessed, research on ocean-based CDR should be conducted in a safe and responsible way, says David Keller, senior scientist at the GEOMAR Helmholtz Centre for Ocean Research Kiel.

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Reihen von gestochenem Torf an einer Abgrabungsstelle in einem Torfmoor in Nordwestdeutschland.
30.01.2023

How can carbon dioxide be recovered from the atmosphere?

If the global temperature increase is to be kept at a tolerable level (regardless of whether it’s 1.5 or 2 degrees), then there’s a theoretical limit to the amount of CO2 that can be released into the atmosphere. If we subtract the amount of carbon dioxide humanity has released into the atmosphere so far from the maximum tolerable amount, the remainder is the carbon budget we’re left with.

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Schornsteine mit Rauch
19.01.2023

What is carbon dioxide and why is it a problem for the climate?

Molecules of carbon dioxide gas (CO2) consist of one carbon atom and two oxygen atoms. Carbon dioxide is a natural constituent of our air, but its concentration is very low. CO2 makes up only about 0.04 percent of the air by volume; air is mostly nitrogen and oxygen. That doesn’t sound like much, but CO2 still plays a very important role.

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Charles Michel (l-r), Präsident des Europäischen Rates, Mario Draghi, Ministerpräsident von Italien, Justin Trudeau, Premierminister von Kanada, Emmanuel Macron, Präsident von Frankreich, Bundeskanzler Olaf Scholz (SPD) , Joe Biden, Präsident der USA, Boris Johnson, Premierminister von Großbritannien, Fumio Kishida, Premierminister von Japan, und Ursula von der Leyen, Präsidentin der Europäischen Kommission (EU), stehen beim Familienfoto während des G7-Gipfels auf Schloss Elmau zusammen.
12.01.2023

Climate action in the G7: an exclusive climate club for all

Despite some progress in recent years, global efforts to combat climate change are making slow progress. For some time, it has been clear in international climate diplomacy that small groups of a few negotiating states are becoming increasingly important. The new G7 climate club has a lot of potential for fighting climate change, but it is questionable whether this idea will gain acceptance.

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Eine Straße durch grüne Landschaft, auf der Fahrbahn steht groß "2023" - ein Pfeil zeigt darüber geradeaus die Straße hinauf.
19.12.2022

Climate matters in 2023

From the new IPCC report to the 28th Climate Change Conference, there are plenty of important issues and events that climate activists should keep in mind in the year ahead.

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Further news from Helmholtz

15.05.2024

Watching indium phosphide at work

Indium phosphide is a versatile semiconductor. The material can be used for solar cells, for hydrogen production and even for quantum computers – and with record-breaking efficiency. However, little…
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07.03.2024

The future of BESSY

At the end of February 2024, a team at HZB published an article in Synchrotron Radiation News (SRN). They describe the next development goals for the light source as well as the BESSY II+ upgrade…
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