The article explains pedigree collapse, where ancestors in a family tree start repeating due to marriages between distant relatives, causing the number of unique ancestors to decline rather than double each generation. This phenomenon is common in human history and affects how we calculate genetic ancestry. It matters because it clarifies why family trees are not simple exponential expansions.
New Scientist offers a detailed historical look at space exploration, moving beyond the romanticized view to cover the technical and human challenges. The feature examines how actual missions unfolded and what they reveal about the true nature of venturing beyond Earth. It gives readers a grounded perspective on the obstacles and achievements that have shaped spaceflight.
Twisteddoodles' latest cartoon for New Scientist reworks the famous Matrix choice into a science-themed dilemma. It humorously invites readers to decide between facing a complex reality or staying with a simpler, more comfortable view. The piece lightheartedly reflects on how scientists and the public navigate inconvenient truths.
A New Scientist analysis breaks down how many calories you burn when covering one kilometer on foot—whether walking, jogging, or running. The key takeaway is that running burns the most energy per kilometer, but walking uses less total energy despite taking longer. This matters for anyone planning exercise routines or tracking fitness goals with efficiency in mind.
This article explores the geometric and topological principles that govern balloon twisting, explaining why certain shapes are possible or impossible based on the balloon's flexibility and structure. It showcases how mathematical concepts apply to a playful art form, revealing hidden complexity in a familiar party trick.
This article examines whether routine preventive flea treatments for pets are necessary or might cause more harm than good. It reviews evidence on potential side effects and environmental impact, helping owners make informed decisions.
Physicists are exploring theoretical black holes that, if they exist, could violate the second law of thermodynamics. This challenges longstanding assumptions about black hole physics. The concept, if ever verified, would force a major rethink of the universe's fundamental rules.
New Scientist has curated a selection of the most promising popular science books hitting shelves in August 2026. The roundup covers a range of scientific topics aimed at general readers. It helps curious audiences quickly spot engaging and accessible science writing to add to their reading lists.
The authors of a kidney cancer study issued a correction to their paper on casdatifan, a drug targeting HIF-2α. The correction addresses the reported connection between durable clinical response and HIF-2α biology. This clarifies the original findings for researchers and clinicians following the treatment's development.