Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

with a total forest area of 283.7 million hectares and forest coverage exceeding 25 percent of the country's total land area, the report shows. In this year's government work report, the country has ...

3月20日上午，期刊分区表官网撤销了2025查询通道以及相关数据，因此有理由怀疑之前可能是在进行数据测试。 然而，中科院官方的分区其实并未发布，大家还是要以官方公众号”期刊分区表“的通知为准，最终分区结果，请以官方通告为准！

人类消耗的第二大自然资源是沙子，仅次于水。我们的城市是用沙子建造的，这种日益减少的资源被许多关键行业广泛消耗。每年，从河流和海岸开采的沙子接近500亿吨，是自然补充速度的两倍。随着相关的社会环境影响越来越多，迫切需要可持续地管理这种需求资源。