How has biodiversity changed in recent decades? What are the causes and how can the loss of biodiversity be stopped? In the first global report on biodiversity, the World Biodiversity Council (IPBES) provides answers. The 1,500-page Global Assessment was presented to the public on 6 May in Paris – the most comprehensive report on this topic ever completed. 145 lead authors from 51 countries, including seven scientists from Germany, were involved.

Whether made of steel or aluminium, long or short: nails have become an indispensable part of everyday life. Metal pins are an important element for connecting individual components, especially in timber construction. For a Euro pallet, for example, 78 steel nails are required to fasten the individual boards. With around 400 million pallets produced each year, this is almost 200,000 tons of steel. Hans Korte is convinced that there is an alternative.

While the Blue Lupin is celebrating its comeback, the Yellow Lupin has almost disappeared from the fields in this country. The reason: the fungal disease anthracnosis brought the cultivation of Lupinus luteus to a standstill in the early 1990s. "The fungus attacks the plant's vascular vessels and thus interrupts the supply of nutrients. The plant dies, which can lead to total crop failure," explains Brigitte Ruge-Wehling from the Julius Kühn Institute (JKI).

Children's toys, food boxes or shopping bags: many products already consist of bio-based feedstocks and are therefore considered sustainable. In order to be classified as sustainable, however, the organic content of the material must account for at least 35%. Fraunhofer researchers have been working for years to increase the biogenic content of materials such as plastics.

Ten thousand years ago, the modern bread wheat Triticum aestivum was created, which today provides one fifth of the calories and proteins consumed by people worldwide. Through selection and breeding, countless varieties have been created which are adapted to regional environmental and climatic conditions and have a higher performance. However, wheat yields have been stagnating for some years now. Climate change and the increasing demand for more sustainable forms of agriculture present breeders with new challenges.

Plants once created the oxygen atmosphere of our planet and still do so today through photosynthesis: An average tree releases around 120 kilograms of oxygen into the air every year. However, the plant cells themselves must also be supplied with oxygen. However, there are areas where the opposite is true, as an international team of plant researchers has now discovered.

The demand for macroalgae is growing worldwide: aquatic plants are cultivated as food and animal feed, but are also used for the production of cosmetics, dietary supplements or as additives in animal feed because of their bioactive ingredients. Algae breeding is particularly widespread in China, where the alga Laminaria is of particular importance.

Parsley is one of the most popular culinary herbs. It is rich in essential oils and vitamin C and is ideally suited for refining salads and savoury dishes. But the herbaceous plant is currently causing gardeners problems: it will not grow. Plant virologists from the Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures GmbH in Braunschweig - have now found the cause.

Nano-carriers that are loaded with active substances and release these straight to the diseased cells are already in use in cancer medicine. Now this "magic bullet" could soon also cure plant diseases. A team led by Frederik Wurm from the Max Planck Institute for Polymer Research (MPI) has been working for several years on establishing this treatment method for diseased vines.

"Here in Heidelberg it has become very clear: We can do this. We have gained new insights and partners and forged new alliances.