科学与环境
Did early humans collect keepsakes 500,000 years ago?
来源: Phys.org - latest science and technology news stories · 发布于

Most of us are familiar with the urge to pick up a seashell from the beach or keep a stone from a hiking trip. The object itself may be ordinary, but to the person who keeps it, it serves as a reminder of a particular moment, place or person. Where did this behavior come from? Di
Most of us are familiar with the urge to pick up a seashell from the beach or keep a stone from a hiking trip. The object itself may be ordinary, but to the person who keeps it, it serves as a reminder of a particular moment, place or person. Where did this behavior come from?
Did early humans do the same? A new study by Tel Aviv University researchers suggests that this practice stretches back approximately half a million years, with important consequences for the evolution of memory.
相关报道
Early bets for NFL Week 10: Two games we're jumping on now
Which Week 10 lines offered immediate value once odds came out? Here are the early bets we like.
espn.com ·

Tree-rich landscapes help birds and bats nearly double cacao yields in Peru
Tropical farmers are often expected to choose between high crop yields and protecting wildlife. However, an international team of researchers led by the University of Vienna, in collaboration with the universities of Göttingen and Würzburg in Germany and Bioversity International
Phys.org - latest science and technology news stories ·

Alternative approach could reduce reliance on potentially toxic surfactants in pharmaceutical and food applications
An international research team led by the University of Sydney has found a way to formulate microemulsions without traditional surfactants, which are often toxic and hard to separate from end products. The findings have important implications for pharmaceutical applications and f
Phys.org - latest science and technology news stories ·

Chimpanzees blowing raspberries offer first evidence of learned vocal conventions in great ape communication
Chimpanzees may learn how to use some of their calls from the adults around them, in a surprising parallel with how human children learn words, finds a study from the CNRS Institute of Cognitive Sciences, University of Warwick and Taï Chimpanzee Project.
Phys.org - latest science and technology news stories ·
Human bodies produce 2 billion metric tons of CO2 a year just by staying alive
Humans collectively produce more than 2 billion tonnes of carbon dioxide annually just by turning food into energy, a 74% increase over three decades largely driven by population growth. Unlike fossil fuel emissions, however, the CO2 we exhale is part of the natural carbon cycle,
All Top News -- ScienceDaily ·