Poaching (偷猎) and habitat loss have threatened Africa’s two species of elephants, taking them closer toward the edge of extinction, according to a new report released by the International Union for Conservation of Nature (IUCN).

Before this update, Africa’s elephants were grouped together and were evaluated as vulnerable (脆弱的) by the IUCN. This is the first time the two species have been classified separately. In the past, elephants were mostly considered as either Asian elephants or African elephants. Forest and savanna elephants were typically classified as subspecies of African elephants.

The African forest elephant is now listed as critically endangered and the African savanna elephant as endangered. The number of African forest elephants fell by more than 86% over a 31-year assessment period. The population of African savanna elephants dropped by at least 60% over the last 50 years, according to the IUCN, which tracks the assessment risk of the world’s animals. Africa currently has an estimated 415,000 elephants, counting the two species together.

Both elephant species experienced significant population decreases because of poaching. Although it peaked in 2011, illegal hunting still happens and continues to threaten elephant populations. African elephants also face continued habitat loss as their land is converted for agriculture or other uses.

There is some good conservation news, the IUCN points out. Anti-poaching measures, combined with better land use planning to support better human-wildlife relationships, have helped conservation efforts. Some forest elephant population figures have stabilized in well-managed area as in Gabon and the Republic of Congo and savanna population figures have remained stable or have been growing, particularly in the Kavango-Zambezi Transfrontier Conservation Area in southern Africa.

But with persistent demand for ivory and increasing human pressures on Africa’s wild lands, concern for Africa’s elephants is high, and the need to creatively conserve and wisely manage these animals and their habitats is severer than ever.

The Earth is facing a climate crisis, but it’s also getting greener. According to a new research, the rise is largely because of China and India. A study by NASA, based on extensive satellite imagery, has revealed that the two countries with the world’s biggest populations are also responsible for the largest increase in green plants.

A third of the leaf increase is attributable to China and India, due to the implementation of major tree planting projects as well as a vast increase in agriculture. “China and India account for one-third of the greening, but contain only 9% of the planet’s land area covered in vegetation—a surprising finding, considering the large populations in the countries need much land, ” Chi Chen, the study’s lead author said in a statement.

Between 2000 and 2017, a NASA sensor gathered data of the Earth’s surface from aboard two satellites, the Terra and the Aqua. Using the data, researchers discovered that China is the source of a quarter of the increase in green leaf area, despite possessing only 6. 6% of the world’s vegetated area. Forests account for 42% of that increase, while croplands make up a further 32%. China’s increase in forest area is the result of forest conservation and expansion programs, established to combat the impacts of climate change and air pollution.

Rama Nemani, a researcher at NASA’s Ames Research Center, said in a statement, “When the greening of the Earth was first observed, we thought it was due to a warmer, wetter climate from the added carbon dioxide in the atmosphere, leading to more leaf growth in northern forests, for instance. Now, with the data, we see that humans are also contributing, ” Nemani said. “This will help scientists make better predictions about the behavior of different Earth systems, which will help countries make better decisions about how and when to take action. ”

For the first time, United Nations members have agreed on a unified treaty (协议) to protect biodiversity on the high seas, representing a turning point for vast stretches of the planet where conservation has previously been held back by a confusing patchwork (拼凑)of laws.

The UN Convention on the Law of the Sea came into force in 1994, before marine biodiversity was a well-established concept. An updated framework to protect marine life in the regions outside national boundary waters, known as the high seas, had been in discussions for more than 20 years, but previous efforts to reach an agreement had repeatedly failed. The unified treaty, which applies to nearly half the planet’s surface, was reached late on Saturday.

UN Secretary-General Antonio Guterres welcomes the finalization of the text of the United Nations Ocean Treaty, his spokesman said on Saturday. “This breakthrough, which covers nearly two-thirds of the ocean, marks the culmination of nearly two decades of work and builds on the legacy (遗产)of the United Nations Convention on the Law of the Sea,” a statement said.

Nichola Clark, an ocean expert at the Pew Charitable Trusts called the long-awaited treaty text “a once-in-a-generation opportunity to protect the oceans-a major win for biodiversity”. The treaty will create a new body to manage the conservation of ocean life and establish marine-protected are-as on the high seas. Clark said that’s critical to achieving the UN Biodiversity Conference’s recent promise to protect 30 percent of the planet’s waters, for conservation. The treaty also establishes ground rules for conducting environmental impact assessments for commercial activities in the oceans.

Treaty negotiations were initially anticipated to conclude on Friday, but stretched through the night into Saturday. The making of the treaty represents “a historic and overwhelming success for international marine protection,” said Steffi Lemke, Germany’s environment minister.