A first-class geophysical observatory near Kiruna was proposed by the Royal Swedish Academy of Science over a decade ago. A special board, appointed by the Academy, is responsible for its planning. The board includes scientists from various fields, including radiophysics, electronics, meteorology, botany, zoology, physics, and astronomy. The observatory is open to research proposals, especially those with potential for financial support. The biology of cancer has been increasingly studied, with a focus on its biological aspects. A discussion on "Biological Aspects of Cancer" was held, emphasizing the relationship between protein synthesis and pathological changes in cells. Cancer cells are considered as a separate phylum of obligatory parasites, and their growth is influenced by hormonal factors. Hormone-dependent tumours can be controlled by altering the hormonal environment, and some tumours, like those induced by stilbestrol, depend on hormones for growth. Cancer cells may also be characterized by their degree of dedifferentiation, where cells lose their specialized functions. Cell surface properties are also important, as cancer cells may not be subject to contact inhibition, allowing them to move freely. The structure of the cell membrane and its contacts are being studied using electron microscopy, revealing a lamellar structure and possible extracellular cementing substances. The cell surface is also studied using specific surface antisera, which can identify differences between cancer and normal cells. The origin of cancer cells is thought to involve mutations that reduce environmental control, leading to increased autonomy. Chromosomal variations are common in cancer cells, and these changes may be influenced by abnormal mitosis. Chemical carcinogens, such as nitrogen mustards and epoxides, can induce cancer by alkylation and other mechanisms. These agents can cause direct cytological changes, such as chromosome fragmentation and micronuclei formation. The biological reaction of these agents is likely to involve nucleic acid, and they are considered radiomimetic agents. The role of enzymes in controlling growth is also discussed, with examples like xanthopterin and xanthine oxidase.A first-class geophysical observatory near Kiruna was proposed by the Royal Swedish Academy of Science over a decade ago. A special board, appointed by the Academy, is responsible for its planning. The board includes scientists from various fields, including radiophysics, electronics, meteorology, botany, zoology, physics, and astronomy. The observatory is open to research proposals, especially those with potential for financial support. The biology of cancer has been increasingly studied, with a focus on its biological aspects. A discussion on "Biological Aspects of Cancer" was held, emphasizing the relationship between protein synthesis and pathological changes in cells. Cancer cells are considered as a separate phylum of obligatory parasites, and their growth is influenced by hormonal factors. Hormone-dependent tumours can be controlled by altering the hormonal environment, and some tumours, like those induced by stilbestrol, depend on hormones for growth. Cancer cells may also be characterized by their degree of dedifferentiation, where cells lose their specialized functions. Cell surface properties are also important, as cancer cells may not be subject to contact inhibition, allowing them to move freely. The structure of the cell membrane and its contacts are being studied using electron microscopy, revealing a lamellar structure and possible extracellular cementing substances. The cell surface is also studied using specific surface antisera, which can identify differences between cancer and normal cells. The origin of cancer cells is thought to involve mutations that reduce environmental control, leading to increased autonomy. Chromosomal variations are common in cancer cells, and these changes may be influenced by abnormal mitosis. Chemical carcinogens, such as nitrogen mustards and epoxides, can induce cancer by alkylation and other mechanisms. These agents can cause direct cytological changes, such as chromosome fragmentation and micronuclei formation. The biological reaction of these agents is likely to involve nucleic acid, and they are considered radiomimetic agents. The role of enzymes in controlling growth is also discussed, with examples like xanthopterin and xanthine oxidase.